I'm going to Costa Rica at the end of this month and was looking to do some paddling. I know it's the low dry season, but I read that there are rivers that flow year round. I'm interested in finding a place that will rent me gear and I'd like to find someone to paddle with. I don't want to spend a lot of money on week long trips or expensive guides. I'd like to paddle easier class V, but could settle for III/IV. Any advice?