OK, I bought a Stoltz Ultimate Bow Stop and need to replace existing stop. I also would like to "slicken" up the bunks some with silicon spray. Dumb question, how do you do this with boat sitting on trailer. When I did similar work to my little 14' tin boat, I was able to slide the boat back a foot or two and list boat and rest it on wood blocks. I know there is no way I can do this to a 18' FG boat. Do I go to the lake, launch boat and work on trailer in parking lot?<br /><br />Hadn't thought of this aspect until this afternoon <br /><br />Thanks,<br />BL...