For $90 and 3 hours of my time, this sure was an easy install. There was no need to drill the spring perch for the air line, there are openings on the bottom to route them. Tip- get a coffee mug of hot water to soften the ends of the cut tubeing - much easier to slip onto barbed fittings. Empty with 5lbs , they are hardly noticeable. I will hitch the 3 jetski trailer up this weekend for the first trip to the lake. 140 miles up and over a 4500 ' pass - 12% grade - the grapevine on I-5 in LA. 15 people and 4 skies going.