I did a demo dive with the Seacraft Go as a tow scooter. I ran it up to the jump to Avalanche Alley in Jackson Blue, about 2,600ft into the cave. Despite towing it through multiple restrictions on the trigger, I hardly noticed that it was there, in fact a couple of times I reached back to check on it.
I also played with in in the cavern zone, I still hate the ramp up speed, and wouldn't want it as a primary.
I'll probably buy it from Cave Adventurers, as they have it setup perfectly for towing. They reported that the latest batch now is at $5,600.