I did a yo yo lap quilt a couple of years ago....with a light weight first backing - mine were scrunchy side out - but it doesn't matter. I didn't hook my yo yos together first - i actually used a glue stick to hold them in place on the backing - then blind stitched them to the backing and eachother at each spot that one yo yo touched another. After i was done - i did put another backing on to hide my stitches - which weren't very pretty from the back --- then used the "birthing method" - and knotted to hold the 2 layers together - with the knot ties on the wrong side. That was my 'figure it out as you go' method - but it worked well.