The line itself is called masons string, it’s a string line for laying brick and block, holds up to wear and tear great (figure you use it around cinder block and brick and mortar and they hold up awesome. Works great under heavy tension as well, my net outter frame bends in slightly, I keep it tight, helps when branches start really pushing up
I use 2 nets so this method is a shade different, for single nets I continue weaving and tucking for about 2 weeks figuring that’ll give them about a week to stretch up and fill in
When I double net like this I keep the distance between the nets because instead I’ll tuck for about 10-12 days then let them stretch like hell up that last foot - foot and a half to fill in through the last (days 14-21) week and a half
Take into account rate of stretch, figuring about 21 days from flip till the end of stretch, then figure how high they need to go to reach your top canopy Goal,
Example: if you have a goal, say you need them to stretch up 20”, look at your stretch rate (I measure daily usually to see if they are moving fast or slow) stretch lasts roughly the first 2.5 - 3 weeks after flip, so you’re at day 10 since flip, plants are growing at 1.5” per day, you need them at this point to stretch 16” to reach your goal, so 16 divided by 1.5 would be 10.66 days
Personally If I calculated that on day 10 of stretch that’d be my last tuck day, I know I’ll average 1-1.5” of stretch based off measurements daily to meet the height goal you set, then stop tucking and let them fill in, it’s a guessing game. Some stretch faster, some slower, along stretch for longer time periods, some less works better with clones some plants double, some triple, working with clones you’ve ran before you can better anticipate how much she’ll stretch on average
it’s actually rockin the house pretty good
