I zip tied up castaway yesterday. I used zip ties in place of shock cords as a throw back to my stitch and glue experience. I found it easy to loosely loop the stringer in place, move fore and aft, port to starboard, and keep level and then snug down each to stringer. I found this process allowed me to get everything aligned and fitted nicely. Now, I go back and clip off each of the six zip-ties on that frame, recheck the frame location measurement and vertical alignment, then start lashing. Working on developing lashing speed. I'm kind of slow at the moment, but I get quicker with each completed set.