That's nothing. One guy at work needed a roof rack for his canoe. Out came the drill. A few holes in the roof and a couple of 2x4's and some all-thread ----> done.I was at the wood yard a while back, and was horrified to see two young guys strap a sheet of 8x4 chipboard on the roof of their nice BMW
No roof rack or anything, just sat it directly on top of the painted roof, opened the windows, and tied it down through the windows.