the cut edges do shed===when i purchase minkee the first thing i do when i get it home is take it outside & shake it --alot---i also try to purchase what i need in one piece-so i don't have to deal with any cutting-further shedding. once the cut edges are (finished) they do not continue to shed.
i do not believe spray basting will work with minkee- if you use a single sided minkee it has a shiny/slippery back (satin like) on the back which the spray does not adhere to- if you are using a double sided minkee it is too (lofty/textured) for the spray to work.
you also need to use a good-new-sharp needle- it is not all that easy to stitch through (being a polyester product) hand stitching is pretty much out-
i love quilts backed with minkee & have made lots of them- but they do have their (challenges)