“I’m very glad I chose “shark” seats because hammering your back over a long period of time sure as hell is not good! But since fitting my “Shark” seat 6 years ago it is so much more comfortable, especially when you are on the helm for up to 9 hours. And now with one on the passenger side, they get the same soft ride as me. One comment I had from a lady was that it was like sitting on a marshmallow !!”