>>1677413btw kapton tape can be used as rim tape as an alternative to veloplugs both with tubes or tubeless. 20mm wide tape in two layers on two wheels only weighs 10 grams. you should have very good lighting like with a headlamp if you want to get it to lay perfectly flat with no air bubbles or wrinkles. you could also look into TPU inner tubes like schwalbe aerothan, revoloop, pirelli pzero smartube. tubolito has been available for longer but seems to get mixed reviews. there are TPU inner tubes of different thicknesses, the medium weight ones might have good puncture resistance and hold air well while still being lighter than butyl tubes.