I see where several Nitro boat owners have mentioned the loose fender bolt issues in the past. I have a 2015 - Z8 with fiberglass fenders that I can't seem to keep tight. My next step will be to remove the non-skid on top of the fenders to remove the recessed bolts and then replace with something I can hold a back-up to tighten. Is this something that others are familiar with regarding the Nitro fenders? I've seen others that have fixed using several different methods that seem okay on some and not so on others? This seems to be a very real problem with the fiberglass trailer fenders on Nitro's? I've had to hold backup with vice grips and attempt to tighten using only an open end wrench which takes time. I'm at the end of the threads and cannot tighten further. I know there's not a quick fix, but was just wondering if others have any suggestions to resolve the issue? Both Port and Starboard fenders are extremely loose at this time. Thanks in advance for any advice others may suggest.