Pretty much. I think the new kits are a different style. If I can get these pictures to post you can get the general idea of the pattern for this style of bag. Sorry about the poor quality scan. I made the bags smaller than normal, to just fit my sails. Since my boat is cutter rigged, each headsail is smaller in area than a jib or genoa on a sloop.
Sorry -- I wasn't able to get the pictures to post so I put them in my Webshots album:
Sail Bag 1 pictures from sailing photos on webshots
Sail Bag 2 pictures from sailing photos on webshots