The Everglides (Pre-Bridgeport) used to have a hole at the stern from the V about 4 or 5 inches vertical that went to just aft of the waterline at the bow. When you were stopped or trolling the water would fill it and it became like a ballast tank and stabilized the boat tremendously. When you hit the gas the water would all flow out the back and it would act like a normal hull. I looked at building a new 18 a few years ago and when I was talking to the people at Bridgeport they said they had to get rid of that feature because Coast Guard and Transport Canada just couldn't wrap their heads around how that could work and be safe, so they dropped an amazing feature because of red tape. I just wasn't sure if that feature was gone from the start of their builds or just came in later with new models.