floats coming on and off

Talking with some of the sea plane operations, it seems pretty common
to take floats on and off. However, the rigging and all for the floats
(rudders, etc) seems complicated. Is it actually that easy to put
floats on and off? If I bought a Champ could I just pick up a used
pair of EDO float and put them on every once in awhile (I know
insurance is another issue..)? Most of the floats for 2 place planes
look very similar, are they generic to type?


-robert