Are you looking for something like Stitch Witchery? I'm not sure how high you could get the iron temp before. Harming the PUL (although technically if t can handle a dryer on high, it's probably fine for the iron to be fairly hot as long as you don't have the PUL directly against the iron...). Can you use pins and just make sure to keep them within your seam allowance? I've also seen people using bobby pins or binder clips for PUL.
Re: bonding fabric? OT