Love it on my initial run weekend. I stuck with 4s total and had plenty of power for the river. On 6s I probably would have had to chase it with the Kayak a time or two.
On 4s I trimmed and tabbed all the way up to get the front end out of the water. On half throttle turns the nose stayed planted in the water more than expected, but probably a good thing to keep the boat bottom side down. I have the turn tabs at the recommended 45 degrees but suppose these can be adjusted out if changes are needed.

Yeah, I'd like to get a 6s set up for the ego boost and occasional WoW factor, along with a speed run every now and then with friends on smooth water, but for my normal runabout style of driving 4s was really good. Motor and ESC stayed at very good temps (only a bit warm to the touch) but the connectors got hot enough I propped them up on cardboard after unhooking the batteries to keep them from touching the hull or anything inside for a while. This seem to be par per most of what I've read on the boat and the main concern I had.

All in all it was a great time!