Can't wait to hear how the mainline works. I started with a mainline on a shurflo, went terrible (did bad job attaching saddles), switched to all 3/16 on shurflo. Up to 230 taps this year, 10 runs of 3/16" all the way back to a guzzler with a manifold. Ran about 22" last year. I want to switch back to a mainline and 5/16 but am trying really hard to keep the projects down and the fun up this year. FYI, not sure if you are heating your pump box at all, but that guzzler will get the box up to 70 real quick. I'm adding a fan to my insulated/heated pump box this year to keep the temps down during the day.
Hillcrest Maples
2024- 200 on Guzzler, new home built 2 post, SL vac filter
2023-100 on Shurflo, new 2 Post 4x40 RO Bucket
2022- 150 on Shurflo, new 16x36 Sugar House and 18x48 Vision, Dual RB 25's RO's
2021- 150 on Shurflo, home made arch under 18x40 cdl pan, RB 20 RO
2020- 99 On Shurflo home made arch under 18x40 cdl pan
2019- 10 buckets, steam pan on grill
2018- 5 spiles into milk jugs, stove top, caught the maple bug hard.