I used to use the breathable waders(cabela's)in my kickboat and found that they would rub on the sides of the foot rests and start to leak after a bit of use.I am a bigger guy and alot of bnter's use the breathable ones without problems.I have used them in a float tube also but they leaked a little in the seat,not sure why.
I got a pair of 5m waist highs last year and am happy with them.
good luck out there,swampy