I ordered custom fit Husky guards for the Sierra and they have been great. Nicely designed (flared out slightly to catch debris), fit perfect and were easy to install...and pretty cheap as I recall. Also included a little piece of 3M film for added protection.
Here's how smart I am...I was getting ready to take off the front wheel to make room for the drill and just before I jacked up the truck to do so, it occurred to me: Just turn the wheels!