I would personally say to avoid trying the drawstring trick, but that's just based on my own experience; I've heard other folks say that they like it. I found that it was much more trouble than it was worth.

If you want to be able to put it on in under two minutes+-, learn to put it on while standing up. With practice, it's quick, easy, looks good, doesn't require very much room, and is probably much more period correct that laying the thing out on the ground.

If you do want to try the drawstring, just skip the first and last couple feet of your plaid and install either a large or very tiny belt loop (depending on wether you want to use your kilt belt or a drawstring) at the correct distance from the selvage. Place those, probably, every two repeats of the sett. Viola.