I would strongly encourage you to look at a trailer with e-track embedded in the floor AT THE CORRECT WIDTH! I have an H&H Speedloader EX. It is a hydraulic tilt trailer. I needed to use Race Ramps to get on the trailer. Once on, I realized the factory installed e-track wasn't wide enough. I added another row of e-track to use Mac's Custom Tie Downs.
http://www.macscustomtiedowns.com/pr...e-Block-Straps
I ordered the set for use with e-track. Not cheap, but great quality and great product. Easy to use! I was struggling with axle straps and didn't want to loop through the wheel. Further in the 1LE sub-forum, I read about a few who claimed strapping down with ZL1 Addons or using the suspension wasn't optimal. Further, I couldn't find a decent point to anchor the rear.
With enough space, the Mac's setup above is super low profile and the rachet mechanism is in the clear in front of, or behind the car.