Fifth wheel hitch & bed liner
Hello,
There are many 5th wheel towers that are using the spray-in liners. They work just fine. You will want to keep the hardware tight, but thats just standard maintenance.
About your process, Id modify it a bit - should aid in a good clean installation:
1 - Install the hitch
2 - Remove the hitch
3 - Spray the liner
4 - Re-install the hitch
This way if you scratch the paint during the installation or mis drill a hole, you will have a chance a it being covered with the spray-in liner.
Also, DO USE pilot holes when installing the hitch to 'peek' into the bed as there is no other way to see where the holes will actually end up in the bed of the truck. Mounting the frame hardware is how the instructions suggest - the hardware and truck frame set the baseline for where all the rest lands so start there.
Good luck.
Bruce & Carolyn Wittmeier
MikeBrandn@aol.com
2001 Ford F250 PSD, Ext cab, Shortbed, Island Blue/Silver, 4X4 Off-road, Auto w/SOF, Alum Wheels, Chrome Step, Line-X bedliner, Reese 16K slider hitch, Jordan Ultima 2020, AirLift Airbags, Sunnybrook 30RKFS