Heres an idea. Get yourself a sheet of plastic or stainless steel maybe, 12"x24" and epoxy it to the wall with some good strong construction adhesive. Then, you could use whatever suction cup type holders you want. You may want to caulk around the sheet to keeo moisture from going behind it.
Traded IN 19BH......;-( Miss It!
:cool: 2013 F150 STX Super Cab With Factory Tow Package, Inegrated Trailer Brake Control, 5.0 Liter with 3.55 Gears and Posi Traction :cool: