The boat does 'swamp' when stopped, but will NOT sink as others have implied. The design is pure genius at this price-point.

I absolutely love this little speedster. It's being discontinued, so you had better get one before they're all gone. Fastest boat I own so far. The self-righting feature works like a dream. This boat is not only fun, it's will turn heads in and out of the water.

A few small adjustments and one extra purchases made this an enjoyable experience.
Out of the box the out drive (strut) had to be raised in order to raise the bow underway. It came from the factory too low and caused the boat to become a submarine too easily. To fix this I had to raise the prop as in raising the strut. Explained under "steering rudder adjustment" In the manual. Faster than I expected and more stable now. Turns really quick and is even faster with a larger 2 blade metal prop 35mm in diameter instead of the plastic 3 blade 32mm that it came with.
Nothing to complain about except for the horrible free roll of tape that doesn't flex.
Never would have bought this boat at $329.00 but at the current discounted price it's a steal. Great value, great ProBoat quality and a lot of fun. Never pop'd a wheelie in a boat before.

This boat is a very cool design with thick plastic design. It does sit very low in the water when standing still as others have noted; but it takes off like a rocket when you hit the throttle! It also incorporates all of Probooat's latest technology. I will enjoy adding the Valvryn to my collection!

Took the Valvryn out for the first time today. Got it set up and adjusted and into the water it went, and down it went..I gave it full throttle and it surfaced and ran pretty darn fast, a bit squirrely though. Let up on the throttle and down it went again. Ran it back to shore and found that as part of the self righting feature, the sponsons have no rear panels. Both are wide open to the water so unless you have constant forward motion, the sponsons fill up and the boat sinks. Also explained why it sank when I put it in reverse. Overall, I like the boat but you have to know that it will have to be in forward motion the entire time you are on the water. Might not have spent the money on it had I known this up front. I'm sure if you plug the sponsons it will kill the self righting ability. Overall, nice boat with a learning curve.