Just curious what you guys think about these 2 options. Fake a lake would be cheaper and no cutting the water lines in the boat. I would be afraid to suck air if the seal wasn't good enough. The fresh water flush kit seems like it would be more reliable but possibility of leaks. It also has a 1 way valve which could require the water pump to suck harder than in the lake causing additional strain on the pump. Any experience with either?

Thanks