I had the same results as you when I tried the PA14.
I fish from a PA12 and did roll it last summer in the river. Very little current and I was sitting. I think I know what I did wrong. I had the seat at its highest position, the boat was anchored using the anchor trolley. I caught a very small (maybe 8" ) trout. I didn't want to lift it from the water so I leaned to the side to unhook it. Next thing I know I was in 52 degree water that was arm pit deep.
After I uprighted everything and got loaded back there was a friend close using a small pontoon, kick boat that smiled and asked if I leaned a bit too far to the side.
Morral of the story: lower the seat, use a net, and keep your head in the middle of the boat.
Serious I realy enjoy the PA12 I am using.