I fly also fly a 3-stack of B's.... full vent, mid, std.... sometimes a 2nd mid.
I use pigtails which stay on when unstacked to fly as a single. All bridles stay on also.
All stack lines are the same length (about 4.5') and I use one at the top center too. The center pigtails are a bit longer than the others and have extra knots to get the same spacing.
All kites are framed with 3-wrap spars regardless of vented or not; gusty winds call for a 4-wrap in the front kite.
My flying lines are about 85' with 150# and 200# sets.
I'm planning to come down to TI for the January kite fest. If you go too you will see a bunch of stacks that weekend.
This forum also has a separate Stacking info area.... check it out too....
- SparkieRob likes this