If there is not so much space or if you don’t want to install drilled structures, you should consider flexible solar panels. ACTIVESOL panels are extremely easy to install and hardly need any maintenance at all. This is a solution designed specifically for sailors and camper drivers. In spite of being quite thin, those panels are resistant, and, when fully supported, withstand the pressure of up to 100kg, which makes them safe to walk onto. Furthermore, they can be installed even on an inclined surface.