I love 5200. I can trust it. Mount your 500# motor with 5200 and wait a few days then take all the bolts out. The motor wont budge. You will have to rip off the paint and probably a little fiberglass to get it off. Not a problem if you are good with fiberglass. When I cut a 3" hole in the bottom of my boat and mount the transducer I know it is never going to leak or come loose.... That's a good feeling. I once spent 1/2 a day trying to remove a thru hull transducer mounted with 5200. Air chisel, hammer, crow bars etc... finally got it off. I love that chit
strick