John, Doesn't look like a lot of people responding to your question, so I thought I would.

I am a power boater, and as such do not tow my dingy. But, having said that, I have seen many being towed by sail boats and have a read a bit about it. A very good technique (apparently) is to pull the transom (with the engine still on) up to your sail boat's transom and lift it up so only the bow of the dingy remains in the water. This reduces the likelihood that it will flip over by 100%.

The only issue I can think of with this arrangement might be interference with your rudder, depending on how it is situated I guess.

I know it isn’t the normal way to move with a dinghy, but it seems the safest way to me.