thanks! and here are my answers
not it was't really that tough on the hands using larger needles and knitting slower, i would say it depends more on the uniformity of the scraps and what type of fabric you use.
in the places where i had jean and upholstery fabric it was alot harder to knit than a stretchy shirt fabric, and in rows where wider pieces met wider pieces, it was harder, but overall it was fine.
and to susan..
i didn't overlock anything, i started out just sewing the edges together but changed to sewing the entire lengths of them together to give it some extra detail in the middle of the fabric.
you certainly don't need a sewing machine. it would take longer but you could just sew the ends together by hand using whatever stitch you'd like! it's pretty sturdy once you start knitting it up.
i would suggest using something other than Stockinette because it still rolls, it was just easier to use with my thick and thin fabric. i'm going sew other sections on, which will hopefully make it lay flat.