Remember after the concrete dries you can't fix what you did under the slab, looks like CL5 would be fine, but crushed concrete with the crusher dust in it is some very good stuff
Never hit a deer, but a buck hit me, took the rear right door and the box panel, the dam thing got up and ran away, Saw what a big bull Elk can do to a front of a Semi even knocked the motor loose, the drive shaft even came off
It doesn't matter if it's over your house, the GPS cords will put it at your house and the guys in the black suits will show up at your place, so SSS will do no good.
Like SDMF says, clean it good and leave as is, keep it dry and wipe it down once a year, and don't sell it you will be sorry someday for doing that, hope your son gets to hunt with it
I know one thing a Lund Mr Pike will leak like a sieve after it falls off a trailer going up the boat ramp, forgot to hook the safety chain, to much beer, leaked right below the drain plug just like yours.