Tell us about yourself!
So you are trading the one-time labor of applying a sheet of PEI for the every-time-you-print labor of applying and then cleaning off hair gel between prints? That is hardly less labor intensive. Once the PEI is in place, you can print repeatedly without having to touch the plate between prints. That's a MAJOR time saver right there.
You can buy 3M 468MP 12x12 sheets for the adhesive and avoid having to apply many parallel strips of tape like you are doing here.