I am a long-armer, and I have done only one crib quilt with Minkee. It was a ROUGH 6 hours to quilt...and I probably won't do another. That's just me, tho...I have heard others on this board say they have done them with no problems...I think there must be a certain way to put the Minkee on the frame, maybe selvedge to the sides?? I must not have listened very well, because as I said, the one I did is probably the only one. Wish I could be of some help, but hang in there, someone else will be along and have better info. Did you try searching for the topic on here? I did learn one thing...that's the stretchiest fabric I know of!
So....good luck!