I did something similar, but I just did a quick over itself loop on the rubber band to the tap, then with the big loop thats left from the rubberband, just pull it around the PVC. Holds up really well, no need for the screw.
You will see unfortunately though in a few weeks the rubber bands dry out and they all start breaking. Ive not found a cure for that except to replace the rubber bands.
Good luck!!
2022 4x40" RO, Welch 1397 Vac Pump, 3 Guzzler Pumps, Lapierre Releaser, 1100 taps
2021 Twin Baby Boys, Close to 650 taps
2020 Upgraded RO to 2 post and 7GBS Pump. 265 taps
2019 Smoky Lake 2x6 raised flue, Autodraw system, Maple Jet Filter Press, a beautiful new bride to be my sugaring partner :-)
2017 Expanded Sugar Shack, new 2x6 with float box, NEXTgen Maple RO, 250+ taps, still on sap sacks
2016 Sugar Shack, 2x6 evaporator, 160 taps, all on Sap Sacks
2014 110 taps
2013 35 taps