https://youtu.be/hPnVZpWVygkWell the snow absolutely sucks in Oregon finally got to try the 850 out on water. I'd say top speed is 25-30 mph. With the 165 x 3" track it doesn't pick up speed and doesn't loose speed. You can let off get back into the throttle and it pops right back up on top instantly. I would feel comfortable with a 100 yard pass on water but any longer yours gunna want to do some water protection. It lets water in pretty quick as expected but nothing to worry about for a short pass on water like this one. Me and my dad have been wondering how they would do if you needed to get accrossed water I would feel more then comfortable starting with the skies in water it gets right up on top. I didn't have the balz to lay it on it's side tho I got in a fight with 5 or 9 trees earlier that day and lost one of my intake pods & center console. Over all does pretty good on water if you need to take a short cut.