Do you have a copy of "A Perfect Fish" by Ken Abrames? He has some interesting ideas for shrimp (or shrimps, as Emeril would say) patterns using natural materials. Most are based on the classic General Practitioner fly for Atlantic salmon. They seem to work pretty well both up your way and down here for weakfish (so I am told) and can be tied down to a size 4 or even 6 hook. I will send you a few in the next couple of days, but you may want to give the book a look-see and tie some up.
Hope to see you in August!
Steve "Doc" Duprey