: A lot of those u bolts already come with a flat metal bar that spans the open
: ends. After inserting the u bolt, get that bar across the two threaded
: ends and secure it with the nuts. No need to tighten those nuts too tight.
: The epoxy will keep the nut from spinning off.

I'm guessing you're envisioning this installation before the end pour was completed, and it's a great idea for that.

Unfortunately, I've already done the end pour (using a dam before installing the deck). So I'd either need to drill holes big enough for the nut then fill the whole thing with epoxy, or risk something breaking loose when I don't want it to.

I may just do the regular hole-through-end for the carry handle, and rig other options for the running bow line and security.

Thanks, all, for your opinions & advice!