The Hammer is a box. It has a flat hull, and then sides which come up at nearly ninety degrees from that hull, making the thing look and feel essentially like a box. This gives a very good initial stability, but makes it slow to go edge to edge, and makes it vastly less forgiving to edge mistakes than other boats. Having a slightly more narrow hull which then flares out as you progress up the sidewalls makes a boat which feels a little more tippy initially, but makes edge changes quicker and easier to hold, and this can be felt in the other boats released by Soul at this time, such as the booster. Of course a more narrow hull makes the boat sit lower in the water, and generally feels less responsive. This is the "playboat" feel in action for the Hammer, and is not for everyone.
The outfitting is often criticised, and for good reason. The foot pedals in my view suck, and I just made my own foam block bulkhead. The seat tray/foam seat thing isn't in my view a winner at all, and in other boats in Soul outfitting we have had seats come unstuck during swims for people. The roofrack strap adjustment system for the back-band as a concept is good, but the 2mm thick straps supplied from the factory slip, so we replaced all of ours with 1mm thick strap, and that holds solidly. Of course it will wear out sooner, so keep we will keep an eye on it.
The grab handles do not comfortably accept regular sized carabiners, and one boat rescue ended up overly extended because I failed to get the carabiner attached in a timely fashion. The carabiner hoop thing in front of the cockpit supposedly to allow a carabiner to be attached for rescue purposes does not allow any carabiner to attach to it. Basically rescue features to this boat are an after-thought. Not something you would want to see on an actual dedicated creeker as they could for sure put your life at risk and retard rescue efforts upon the boat.
The top deck has Corran's golf-ball dimple thing going on because they totally do something meaningful to waterflow, but the hull has the company logo extruded from the flat hull because apparently that doesn't have any effect whatsoever to the waterflow.