I want to screenprint two colors on duck cloth canvas. But every time I go to flash it, the duck cloth tends to want to peel. My question is should I use a jacket hold down in order to screenprint more than one color on this type of material, do you think a Jacket hold down may stop the duck cloth from peeling? Any help would be much appreciated! Thanks guys!

I'm not sure what you mean by peeling. If the fabric is lifting off the pallet even with flash adhesive then using a jacket hold down along with it could help. But if I recall duck cloth is a heavy cotton woven canvas type material, right?

If it is a standard duck cloth then it should print much like any cotton fabric except for the difference in weight. The surface knit texture may also be different than of a tee shirt of course.