I run the same kind of double floats that Huntgod uses although mine are 8" wide not 7" and 24" long,just because of plywood original dimensions.My floats work very well with carrots,better with parsnips,best with muskrat poo and some Lennon's lure.As far as a pole I have used 5/16" fiberglass snow stakes(they are ok in non windy spots,but not in an open marsh),open marshes I use 3/8" or 1/2" fiberglass ussually 5-6 feet long.Putting bait up above the float is an excellent way as beav suggested to get the rats moving right on top of your floats.I also use a 4 position float that I built for 1 1/2 coils that really works well.I will try top post some pictures if I still have them.The pan tension is ultra important for rats-its gotta be very very light or you will miss alot of rats.Its like anything-you really need to experiment with what works for you.Very light pan tensions don't do well on open marshes with wind and waves etc..Also have tried some of those repeating colony traps where the rat goes into the trap and has to dive into a hole into the cage underwater below-they didn't work so great for me last year,but I am going to try smearing up the interior hole with wet mud and see if that helps out.Again its all about experimentation and what works for you in your area-floats are not for everyone that I have read,but they sure work well for me!