I just got a 1994 Tigershark Montecarlo and noticed the guy that had it before the owner I bought it from lost the Port side sponsor ( rubber fin stabalizer on the hull ) So now the ski has one and is missing one. I guess it has been ridden like this for quite some time. I was going to order a new one and install but the previouse oener convered the holes with a bondo like hard product. My question is is this sponsor needed? If it is were the holes drilled and tabed in the hull because i cant fine where a bolt would have come in to the engine compartment they are too low. Thansk for your time.