What about rotating it with the controls to the back? PITA to engage manually, but you'd get the same effect but without using the bolts are the retaining method for the winch.
What idea are you thinking of?
Do you have a sketch of the bumper you're building? I've been tossing around a few different designs and just for the life of me cannot think of a way to finish off the bumper to tie everything in together. But I'm with you, the bumper's that look more like battering rams isn't my style. The bumper should be tucked in close to the truck, but still provide the protection needed. Hard to pull off with so many coolers hanging so low.