Thank you all for your advice and opinions.
More or less everyone told me not to try moving a ~2000 lbs boat with our minivan. The exception was one person on the Com-Pac 19 forums. I decided to listen to the one person.
The excellent local mechanic was able to put a transmission cooler on the van with only a few days notice. After that I headed 180 miles south to pick up my new-to-me S2 6.7 Grand Slam. The sales brochure claims the boat weighs 2200 lbs.
The weather forecast was calling for rain and winds building to 20mph around mid-day. In the photo I attached you can see the rear end of the van was loaded down significantly more that it probably should be but it was not bottomed out completely.
On the way back home the trees were moving and bending in a way that looked like at least 20mph to me. The wind started out as a cross wind and shifted to be almost a direct headwind about half way home. I could feel the wind pushing on the van and the boat, but moving along at 55mph I never had any doubt that I was in control.
I love this Traid trailer and the disc brakes. I can see now why the quote I got from Traid a few years ago was such an eye popper. They make a very nice boat trailer. Stopping with the surge brakes was very comfortable. I never had to stomp on the gas to get the rig going.
When I got back home a friend of mine told me that the 20mph forecast winds actually turned out to be 50mph and the stuff that I thought was heavy rain was actually hail.
I hope to never go anywhere near this far again towing with the van. I also hope I can do something to put a little less weight on the tongue.
David Tyler -- When I bought this boat I made a deal with myself. I am buying this time but if and when I ever feel the need to have something different in the future I will be building a new boat. I will be keeping an eye on your 7m Siblim development.
I am starting to draw some sail plans. I expect to start a new thread about a S2 6.7 junk rig conversion soon!
Thanks again to everyone.
Scott.