DOES ANYONE KNOW WHO MAKES GRUMMAN PONTOON BOATS AND IF THEY ARE STILL IN BUISNESS. I HAVE A 1994 GRUMMAN 20 FOOT PONTOON BOAT. I HAVE HAD IT IN SALT WATER 4 TIMES THE REST OF THE TIME IT HAS BEEN USED IN FRESH WATER. THE BOAT HAS NOT BEEN IN THE WATER FOR TWO YEARS BECAUSE OF BACK TO BACK KNEE REPLACEMENTS. I WAS NOT ABLE TO PUT IT IN THE WATER. I PUT IT IN THE WATER LAST WEEK AND I FIND THAT CORROSION HAS PITTED THROUGH THE PONTOON. WATER HAS LEAKED INTO THE SPONSON. I THINK THE BOAT IS STILL UNDER WARRENTEE. I KNOW PEOPLE HERE IN CHARLESTON SC THAT KEEP THEIR PONTOON BOATS IN SALT WATER CONTINUOUSLY WITHOUT HAVING THIS PROBLEM. ANY IDEA HOW TO GET IN TOUCH WITH THE BUILDERS? THANKS