I'm in the process of making a full length belly plate. I was going to use steel plate as I already have a suitable piece on hand. I'll use alum for the front bash plate. Most aftermarket skid plates are aluminum. Looking for opinions on how the alum plates perform. Do they hang up on rocks? Is it worth the expense to use alum instead of steel? Finally has anyone made or used a swing arm plate to protect the rear end and how well did it work?