senkos with O rings

???after landing some nice bass with a 4 inch senko only to then lose the senko I switched to an O ring on the senko and put my Yamamoto split shot hook to the O ring. I continued to have fish hit the senko, but after a few runs the fish spit the hook. this also happened repeatedly when using the new Yamamoto weedless senko hook. what am I doing wrong and what modifications should I make. I like landing and releasing fish, but hate to keep losing the senkos.