I looked into the hot vac system for drying out my boat which had/has the starboard side wet core issues that seem to be a recurring problem on the J-30. I was told that it would not be a good choice for my boat because it is really designed to suck moisture out of the laminate, not the core. If your issue is blistering due to moisture in the laminate the hot vac system may be a good option but if your moisture is in the core probably not.