I just finished one a couple of weeks ago. My DIL wanted a polyester quilt to use on their couch. She said the 3 kids would ruin any other fabric. I have a Tin Lizzie and I kind of tacked it on the frame. I sewed circles about the size of a quarter (sewn 4-5 times around) in the center of alternate blocks. My thought was that this will be more secure than just tying it. I hope it lasts. I'm not doing another---ever.
Butterflywing has made some beautiful polyester quilts, maybe she will chime in here with info.