Roll-On Bedliner for Rear Wheel Wells???

Was thinking about a roll-on style bedliner to do the rear wheel wells of my new Raptor and potentially to coat the frame rails under the truck for rust protection. Has anyone done this? Is there a roll-on product you recommend? Thought about trying a spray-on bedliner product for the rear wheel wells, but I thought roll-on might be just as easy to apply and look nicer / less messy. Any advice is appreciated. Thanks in advance!

Spray on would be way easier. There are some funky places in the wheel wells that a roller may not reach.

Spray easier.....check out this thread:

http://www.fordraptorforum.com/f264/review-rustoleum-truck-bed-coating-wheel-wells-55593/

It has held up real well so far.

Sprayed my 14. Worked great. Will do the same on the 18.

I used the spray on Plastic Dip(rubber stuff) Looks great, was easy.

Sprayed my 14 great.did my 17 didnt stay on put husky liners on.

Had mine spayed professionally for $100. I wouldn't put roll on, on my $70k+ truck.