in my experience the bigger the lure/streamer/zonker the bigger the fish.
Some of the patterns i tie up are HUGE, over 4 inches long and the trouts love them
I used to think the big flies were not for me. Somehow they were too complicated to tie, but in reality they are just as easy if not easier than the small (size 10,12) flies that we use most commonly.
You dont have to start off with palmered zonker strips, but like the patterns shown previously, with the zonker strips tied in like a wing at the front and back of the fly.
One thing i will say is if you do try it, use strong thread like 3/0 or 140 denier. It will make your life MUCH easier
Have a gander - all these use zonker strips either tied in as tail or palmered to form a body