[aftermath]

I watched a race show the other day and they strongly recommend a "over the tire" strap as opposed to synching the car down and compressing the suspension. They say its hard on the suspension and have seen shocks leak fluid from it. I use a strap on each corner, and then 1 or 2 safety chains. Plan ahead of time, the 911 is low and wont clear most ramps without scaping the spoiler ( my 930 can not be done without extra wood ). grab some 2 lengths of 2*6 to extend the ramp, this will help from bottoming out. Make sure you have a spare, a jack and a tire wrench taht fits the lugs on the trailer. I would strongly recommend a dual axle trailer ( much safer ), where I live a dual axle does require trailer brakes.

You truck will pull fine, safety brakes is nice but not necessary for your load, unless its a really large heavy flat deck. If you rent a trailer from uhaul, they have a braking system built in.