Mike -
On my 18' flatbed, my Amphi (facing forward) ends up with the rear axles centered in between the trailers axles. The weight seems to be just right. This has worked for trips from Portland to Tampa and a lot of miles in between.
The safeist methods are always 4 corner security, preferably using over the tire type web straps. Alternatvely, you can use a wide strap ((I use 10k lb) thru each wheel too. You should have straps that are capable of 4x the car's weight. In a crash, the car won't just weigh 2600lbs! Just put a clean rag between the strap and rim edge (prevents cutting) and the whitewall. Remember that you are protecting not just the car, but everyone around you in case of the unthinkable. I have tested this!! Remember the article I wrote after crashing twice in 12 hours in a blizzard?
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Rocky Mountain Amphicar -
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