I don't understand the question. A sliding float is fixed as soon as it hits the bobber stop. It's really pretty simple...adjust your riggin to the depth of the hole. I catch as many fish on a fixed as I do a slider, and I don't really care which one. I just wake up, grab my rod, and whatever float set-up I happen to have tied on my float rod, I use! I just adjust the float to the match the depth and bam! A sliding float allows you to cast easier from the bank. Really that's the only distinct difference I know of.