I have been wanting to add my national letters to my laser sail, but cannot seem to find them for sale anywhere online. The closest I have found were the digital "8" letters that I could use to make the letters "U" and "S" but those cannot be used to make the letter "A." Can anyone send me a link to where I can find them for sale. I am in the United States, so I will need "USA".
You most certainly can make an "A" from the digital "8"s. It is no worse than an "S" that looks like a "5". Most people will get it, though I think I remember some ruling saying it wasn't kosher at high-level events.
This is what the RRS says (emphasis mine): G1 ISAF CLASS BOATS
G1.1 Identification
Every boat of an ISAF Class shall carry on her mainsail...
(b) at all international events, except when the boats are provided to all competitors, national letters denoting her national authority from the table below. For the purposes of this rule, international events are ISAF events, world and continental championships, and events described as international events in their notices of race and sailing instructions;
In practice, this is largely a cultural thing. In this country (FIN), everybody has the letters, even on non-international classes and even if they never race. It's seen as a proper thing to have on your sail. The Laser class was actually an exception for a long time, but from 2000 or so on, we've all had them, too.
The Star class had a system of "districts" which did not care about national boundaries, at least in Europe, and some sailors in the class even developed "District Pride". Very refreshing in an increasingly nationalistic world.