I could probably fix it with the thru-hull mount such as used by Mokai. Their boat's don't leak and they have 20+ thru-hull below the waterline fasteners.
The trouble with molded in studs like this one is that all it takes to split the hull is for a careless assembler to overtighten one of them. That appears to be what happened in this case.
I had noticed upon initial inspection that the area along the bottom there was pulled in at that particular plug. Figuring it was just a common malady for plastic molding I didn't think much of it at the time.
I have little doubt that ACK and Hobie will do whatever they need to do to take care of it. I have 4 Hobies and this is the first one I've had that was defective. So as much as I don't like it, it's just one of those little things in life that you have to grin and deal with. Not a big deal compared to a lot of other things.It's just a shame that such a minor thing can sink a boat and Hobie has to eat a hull over something this small. This can be done better, if in fact, it's really a problem. For all I know mine is the only one like this.
Here's a better photo:
The dark red on the hull is where the water is now. Still dripping out. Came in a lot faster than it's going out.