sorry but heres another new guy question. bought the diesal 75 last year when i started kayaking. im 5'3'' ( on a good day ) 155lbs. ive worked on my roll alot and alot of the time i didnt wear any gear, just my skirt when i was practicing and rolled it well. the other day i was trying to roll with all my gear on and had a lot of trouble. the first couple i could hit but they felt slow. after that i couldnt get it to go over that last little part to finish it off.when i can get a paddle on the river bottom no problem rolling there. also went out and ferried for about an hour pretty easy stuff, but the next day i felt like i did 300 situps. is the diesal to large for me or is this another case of keep practicing.