Hi Rusty,
You'll find the info in the books I have recommended just right as it is written by fly fisherfolks for fly fisherfolkses. Appreciate your restriction on carrying a book and requirement for an A3 sheet but its all there in John' Goddard's
Waterside Guide which is a nice wee tome suitable for a waistcoat. Or more suitable for what you want - a couple of scans from the
The Flyfisher's Handbook will be useful enough and they'll just need updated by the month (or thereabouts!).
Or if you choose to do an A3 sheet I am sure you could flog a few of those!!???
Andy