Brown Woollybugger in size 6-12, weighted on top to ride hook up along the bottom.
Takes 2 minutes to tie and I'd put it up against any "realistic" pattern out there. No difference in fish catching and a lifetime of time-saving/material costs to tie. In fact,it may be obscure enough that a smallie thinks it's either a crawdad or a muddler.Bonus. If you're feeling frisky you can add rubber legs but a long hackle will work just the same.
Lot of Ohio stream research done on this. My opinion. Course, if you like tying realistic patterns then go for it.
Oh yeah, the only other patterns you need take are black woolybuggers (hellgramite mimic?) and a yellowish popper with some green in size 8-12 for topwater.