pillcaster,
I have limited experience with smallie poppers, but, I do intend to change that this coming summer. I have caught a few on poppers and sub-surface and find that they are a lot of fun to catch. Since my trout water is getting more and more crowded each year, I have decided that it is time for me to explore other areas of my rivers for bass.
I have done a lot of searching on the Internet for bass fly patterns to tie up and poppers and I would say that 98% of the bass poppers I have found do not have any legs and the bass poppers I have tied up without legs have worked very well. Most flies with the rubber legs end up losing the legs soon after being used but continue to produce strikes. I think that adding legs is more for appealing to the person buying them then to their fish catching ability.
Most of the bass poppers I tie up are tied using the "blockhead" type head which I really like and since I found a source for the unique shape blockhead material, I have not tied up any using any other type head. I do not install any legs on mine and feel that they are not needed for bass. I do feel that legs are needed on poppers that are going to be used for bluegill.
Just my thoughts on your question based on a limited experience using bass poppers. Hopefully, I will know more after spending time this summer chasing the smallmouth on my rivers and lakes. Come join me and we can gain knowledge on this together......
Warren
Fly fishing and fly tying are two things that I do, and when I am doing them, they are the only 2 things I think about. They clear my mind.