I went on my first outing on saturday. I used a borrowed paddle and I think it's too short. It measures 84" (213.36 cm). So, what size should I try? I saw some that are 220 cm but would that really be noticeable? 230 cm would add almost 3" to each side. I'm not sure I will be able to borrow another one so I might just have to buy one. What would you recommend? This is for calm river/canal kayaking.