Very, very interesting sumo….I too have some questions for ya. Is it the “Rhino” name? Or a knock off, like Herculiner or something like that? I’m also curious if it’s smooth or rough, and if you’re losing any speed because of it. I’ve got a Crestliner and the place I’ve been fishing quite a bit does have a gravel ramp, not good when I hear the scraping. Can’t wait to hear what you have to say.