Hi - need to replace the oars that came with my newly purchased Widgeon (one has dried and splintered) and they seem quite short. Ill be using them to get away from the boat ramps on busy days and I also would like to do a little rowing with this boat and I am wondering if 9" would be about the right size or not. I have found Sawyer oars that take apart that I am interested in just don't want to buy the wrong size.