Motor supports made of "polyflex" polymer are a simple and effective alternative to replacing conventional motor supports. Their advantages are numerous: extremely solid and efficient. Their lifespan is prolonged, because insensitive to corrosion and resistant to hydrocarbons. Isolate the engine from the hull. Improve soundproofing. They completely fulfill their roles as silent blocks to obtain sufficient vertical deflection, a good level of insulation, combined with a minimum of lateral deflection under the thrust in propulsion and the loads consecutive to the sailing conditions