I wish i had a place to hang things outside !!!.....but my back yard just doesn't really work....and i think the front yard would be a little strange.
That aside...i confess that i machine wash and machine dry all the quilts i make....i figure the recipient will do the same - so few people hang laundry any more.... that i want to make sure everything about the quilt is behaving as it ought.
PS...i don't think 100% poly batting shrinks.