This might be a new question for the forum, but I need a powerful remote for my boat. The goal would be to sit on the beach 50 feet away from my anchored boat and adjust the volume and song from my beach chair. The boat has a Clarion cdm5 with a 600 Watt JL Audio system. The small remote that came with the CDM5 just isn't cutting it. Any suggestions?

Note: At home I have Aeros RF (w/ booster) and its amazing! I'd love to use it on the boat however the booster needs power and that isn't really an option without making this a big project.