Here's a simple solution for a 4-way tilt system: 1. Weld up a rectangular "picture frame" structure of, say, 1 1/2" OD stainless or aluminum round tubing, slightly larger than your solar panel. The frame can be permanently mounted to your roof rack or vehicle. 2. Bolt eight - ten ea. appropriately sized Gripfist rubber QR clamps, two (or three, for larger panels) onto each side and two to each end of the solar panel with 1/4" -20 stainless pan head bolts, washers, and locknuts. 3. Attach panel to framework with Gripfists. The panel will be suspended inside the frame like a trampoline. 4. Modify a telescoping painters' pole or telescoping tent pole to use as an adjustable strut to accomodate a range of tilt angles. It needs to be mechanically attached at each end to prevent damage from a wind gust. Usage: Fastening all eight - ten Gripfists to framework will lock the panel in closed position and provide shock absorption on rough roads. Fastening just two (or three if on side of larger panel) of the clamps to the framework will allow the panel to tilt up on the framework in that direction. For that matter, it also allows you to completely remove the panel for storage, roof maintenance, etc. Granted, you will have to climb up there to tilt manually and again to resecure. If you are envisioning this contraption to tilt electronically and automatically, it's possible but you're gonna need a lot of aspirin. Don't forget to allow for the strong uplift forces when panels are mounted to a roof-top structure. I used this concept to build a one-way tilt panel and it works just fine and I see no reason it wouldn't work for a four-way system. Gripfist clamps are inexpensive, durable, and are available on Amazon and at Sportsman's Warehouse. Good luck.