During installation of the solar panels, I ended up using two different ways to fasten the panels to the roof: Brackets and Rails. These are five 550 KWH bi-facial panels on the roof. For my product reviews please visit my Amazon storefront: https://www.amazon.com/shop/electricboatadventures By using my Amazon links, you support my channel. As an Amazon affiliate, I EARN a commission for referring sales, however, you never pay more by using these links. Thank you for your support! I would love to hear your input on what type of solar panels you use. If you have experience with this type of project, please drop me a comment or go to my website and email me with your product recommendations or collaboration requests! This is the 1995 Catamaran Cruiser Lil' Hobo I will be converting to electric propulsion. If you like to follow along my progress, please subscribe to my channel If you would like to contact me regarding products or collaborations, please visit my website: www.electricboatadventures.com