After a second inspection, it looks like they destroyed the ignition, and replaced one of the new wheels/tires I put on with the spare. I guess the lock on the wheel to the trailer frame held long enough to blow out the tire.
I got video of the thieves from the house down the street leaving the intersection about 300 yards from my house. They were using a U-Haul van. It looks as if they were just roaming the streets looking for something to steal because I saw the same van earlier int he night on the video. They drove by once and an hour later they stole it. They drug the boat with the tire locked to the trailer frame about 200 yards from the house and stopped for about 10 minutes where I assume they cut off the locks - they had the hazard lights on and three cars passed them without even slowing. They were just out of range from the camera at the intersection. Looks like they had no license plate on the van. The upsetting part is that the police don't even want to look at the video - even when handed to them on a silver platter.
Now I have to bulk up the security on the trailer and boat and in doing so I saw this:
It amazing how easy these measures are to defeat. I feel that there's nothing but a shotgun that'll prevent theft on the street around here.
I feel like I should never leave my garage with the boat or trailer now. And even now I may lock my trailer to my house while it's in the garage. Or I might just move to Marin if I can afford it.