BIFFY FIBERGLAS PRODS MID AMERICAN BOAT DIVISION MERCURY MARINE MOBILE FIBREGLASS LTD MCCRACKIN WOOD PRODCTS HYDROCRAFT INC AQUA MARINE LTD MICHAEL DUFRESNE YACHTS INC INT'L MARINE CORP OF NA M B INTERNATIONAL oob 5/93 HEITMAN IMPORTS EAST BAY BOAT WORKS INC