Method 1:  Find one of the elastic cloth bands that are used for hair.  They're available in many colors, try to find one of a similar color to your neckerchief.  Double or triple fold it, and slide it up the ends of the neckerchief below the slide.

Method 2:  Put only one end of the neckerchief through the slide.   Bring that same end back around and put it through the slide a second time.   The slide is now held in a loop of the neckerchief.  Then put the other end of the neckerchief through the slide.  The first time you do this, you'll have to adjust the slide to get it in the proper position on the looped side.  Once you get it properly adjusted, you only need to remove and insert the un-looped side of the neckerchief when you take it off or put it on.  The slide can stay on the looped side, so it won't get lost, even when you're not wearing the neckerchief.

I've used the four compass points in the following example for simplicity.  The same principle works with any other compass bearings as well.

Suppose you're camped by a small stream in the middle of the forest.  You know that the stream runs basically North - South.  You start out for a hike, using your compass to walk East.  After a few hours, you stop for lunch and then head back.   You use your compass to walk West, aiming for your campsite.  When you reach the stream, you don't see your campsite.  Due to walking through brush, around trees and rocks and such, your course, both out and back, has deviated somewhat from a straight line.  But by how much, and in which direction?  Do you walk up-stream or down-stream?  And how far do you go before you should you turn back and try the other way?  You can only guess.  Even if you're only off by a hundred yards or so, you could still spend hours finding your camp.

To avoid this problem, don't try to return by the exact same route.  If you came straight East, don't go back directly West.  Instead, deliberately head a few degrees either North or South of true West.  This way, you're obviously going to come out either up-stream or down-stream of your campsite (depending on which way you went off of true West) but the difference is, you'll know which way to turn when you do reach the stream.  You've purposely walked two sides of a triangle.  Because you know which direction you veered off from your "true path", you'll know which way to turn to walk the third side of the triangle and complete your trip back to your campsite.

Computer programs use a set of rules, called an algorithm, to do things.  You can use an algorithm for your passwords.  This way, you only need to remember the algorithm in order to "memorize" as many different passwords as you need.  Let's say you need an eight character password (this will work with any length password you need, but eight is a common size).

NOTE:  This sounds much more complicated than it really is.  If you try it, you'll see how simple it can be.

• Start with a four-digit number that you can easily remember, but others can't easily guess.  You could use part of your own (or, even better, someone else's) telephone number, but don't use the first four digits, use some in the middle, or maybe every other one.  For our example, we'll use 5873.  This is the only thing, other than your algorithm, that you'll need to remember.
• Now we're at the Web site that wants a new password.  Let's use the site you're on: bsatroop65-wd.org.  You're going to apply your algorithm to take part of the Web site's name and mix it with your number.  For our example, let's start with the third character in the name, and then take every other character.  To get to a total of eight characters for your password, you'll need four characters from the Web site's name: aro6.
• Now we'll mix them, every other one: 5873 + aro6 = 5a8r7o36.  This would be a reasonably secure and un-guessable password.
• So, for the above example, all you'd have to remember is:
  • The number, which in our example was 5873
  • The rules we used:
    • Start with the third character of the Web site's name
    • Take every other character
    • Mix them, every other one, with the number

You will, of course, use your own number, and your own set of rules.  You can start on any character in the Web site's name, skip any number of characters until you get the number you need, or take the last character, then the first, then the next to last, then the next to first.  If the Web site has a short name, you can re-use the characters, in the same or in reverse order.  You can capitalize some of the letters (perhaps the second and third), which will make it even more secure.  If you need a shorter password, just chop it off at the proper number of characters.  If you need a longer password, continue the algorithm until you get to the length you need (If you used a telephone number for your starting number, there should be more digits available that you can easily remember.  If you didn't, just repeat the ones you have.)  You can mix your starting number and the Web site name characters in a different way than we did in our example.  The possibilities are endless, just make sure it's a set of rules that you can remember.  (And, even if you do have to write them down, you can do it in a way that only makes sense to you: "Web: Start with the third, take every other one, mix every other one."  YOU know what that means, but if somebody else found that note, they'd still have to know what on earth it was talking about, and they'd also have to know your starting number.)

The idea is to use the same starting number, and the same set of rules for each and every Web site you visit.  This makes it easy to remember.  Since you "re-create" the password every time you see the Web site's name, you don't have to remember the password.  Since it's created using the Web site's name, it will be reasonably unique (if two Web site's names have the same letters in the positions you use, those Web sites will end up with the same passwords, but most Web site's names are fairly unique to begin with).  You don't have to write your passwords down, and yet, you can still have a virtually unlimited number of unique, highly secure passwords available for your use.