I'm thinking of purchasing a kayak in January. I've done quite a few paddles using hired or friends kayaks so feel it's time to get my own. Anyone got any advice as to what to make/model to buy? I'm leaning towards a "sit in" rather than a "sit on top", I have tried both. Will be used on the Pittwater, Hawkesbury River etc. [hr] Will be buying a single, not a double.