I like them alot and have used one in the past. Nice thing is that the base plate bolts down to the deck with screws so no under floor access required. once you crnak it down its suprisingly solid.
They kick A$$ for the money the only thing is some of the bigger riders make it flex a bit nothting to bad though I think it is rated at 275 lbs. so no doubles. all in all it holds up great we have been using ours for two seasons and I'm 200lbs.