turn it down
If you have the AC on high (all the way up) the compressor is not cycling and there is probable a thin sheet of ice building up in front of the coils. This then melts and trips in the cabin. Turn the temp down a bit and make sure the compresor cycles. It will cool some what better, but will not leak. These units are good for a 26 ft boat, but your's is a bit bigger. A shade over your boat will help a lot also.