Well the floor on the front i drilled and put 3 carraige head bolts with nylon locking nut's and then to mount to the benches it depends on if it's a sealed bench, if it's a sealed bench it need's to be long course thread stainless self drilling bolts, and if it's open bottom just a stainless nut and bolt is all you need.
The antislip stuff work's wonders, at first i wasnt impressed since it took 3 coats to get it to stick pretty good, after you let it cure and sit for a few days it gets really solid as a rock.