I have had a really hard time trying to roll the newer designed fat creek boats.
I am able to roll long narrow boats much easier. I could one handed roll the Dagger Green boat (long and narrow) but I have a hard time with my WaveSport Recon 70 that is short and fat.
I recently got an older designed boat with a lower deck and I am able to roll it easy peasy!
Maybe try a different boat design.
That's my 2cents.