I saw a picture of a 'travel' jig that used velcro strips and wood pegs. The set up was designed for use on a carpeted floor, the velcro was suck into the carpet at the appropriate locations.

My jig is an 8' length of 1X6 pine with 3/4" dowels. I drilled several hole patterns for various lengths. I then took different colored magic markers and marked the correct holes and recipe for each leader right on the board.

I can set the jig on my kitchen table and not have to bend over. Using a large diameter dowel makes it easier to pass a whole thread spool through the loops.

I use meduim dun color for my leaders, trying to match the color of an overcast sky.