Wondering if anyone can offer a suggestion on how to safely carry two w/c canoes on a Chevy Blazer? The vehicle has a manf. standard roof rack, which is fine for one canoe, using foam blocks and tie downs to the rack and to the frame at the bow and stern. Two canoes, side-by-side, will be substantially wider than the vehicle. I would appreciate hearing how others have approached this , hopefully without "launching" your canoe(s) across the highway at 55 mph. Or should I be thinking about a trailer........? Thanks.