As Bill mentioned, I can stand in my Revo without the stabilizers but standing without the pontoons, all my concentration is on not falling in. The pontoons have added a whole new dimension to my kayak fishing. I now do a lot more 'sight fishing' and my back doesn't get as fatigued as it use to.
I really like using the pontoons and haven't left home without them since having them.
PS: Bill, it's good to see post on PF.com again. Welcome back.