Have had a Rutland 913 on Storm Dragon for 3 years, she is a 35 Holiday, the wind generator mounting kit which i bought as an extra has a bottom bracket which pivots, and is bolted to the transom, and the mounting kit tube goes through the pushpit rails, ie the tube touching the outer side of the lower pushpit rail and the inside of the top pushpit rail, then i have 2no 25mm bracing tubes located from the fixing points on the upper tube of the fitting kit tubes, then secured to the deck, one secured on the transom, and one near the toe rail on the starboard side. Have had no serious problems, and the people whom make the Rutland are very helpful with technical problems. I do actually tie up the blades when motorng or when connected to mains in a marina to save wear of the unit