I tie mine simaliar
I tie mine with the rabbit tail, and then a body of light flashy dubbibng, olive or cream, 2 olive saddles on the back, then a dahlberg diver style deer hair head. The collar of deer hair creates the side fins and they don't flair back, and the saddle hackles, tied tent style on the back create the slimmer profile. It probably takes a few extra moments to tie, but I've caught 3 species of trout, steelhead, smallmouth, largemouth, pike pickeral and a walleye on it. I tie it in a #2 for steelhead and as small as an 8 for trout. I also make the "olive's", brown and do well.
Hope this helps,