Why does this sound like an un-insured motorist case in the making?
PVAMax I won't harp on you, as I too towed PWC with a Grand Am and a GrandPrix not much larger than your Cobalt in the past. But I think you need to understand the liability that Foster is trying to convey to you.
If someone pulls out in front of you with a $40,000 truck and you pile into them, it will be your fault. It won't matter what the situation is, by law, it will be your fault as you were breaking the law when the incedent happened. Even worse, your insurance company may feel the same way and now you will be treated like an uninsured motorist. Now you need to foot the bill for that $40,000 truck out of pocket. My guess if you won't buy one for yourself, you won't buy one for someone else, now he has to pay out of his pocket. That's not cool or fair.
I do believe this is the same situation if a drunk gets in an accident. Doesn't matter who hit who, one was breaking the law and they are liable.
We all know you can physically pull that boat. And you have proven it can be done. It just doesn't make it right. The last analogy is those of us who drive our trucks on MN lakes. We all do it, and we have shown they do it well, it doesn't make it right. And most of our insurance companies will not pay for that truck when it goes through the ice as it was never intended to go there.
You can only "brake early" when you know something is coming, Stop sign, traffic light, your turn. But you cannot brake early when someone else does something stupid like pulling out in front of you, or their mattress flies off the trailer in front of you.
Story over, be careful, be safe. Enjoy your PWC/boat and keep contributing to the board, but try to promote proper towing and following the ratings of the vehicle for everyone's safety. I would hate to lose my truck, boat or family to an uninsured motorist.