i use basically the same method as passtherizla, it served me well during my season and i ended up preping boards/ skis for mates as well and ended up with case loads of beer as payment.
i personally prefer to use a metal blade for scraping. i brought a burton one yrs ago with nice radius corners, go steady with it and results are great. structure base with scotchbrite pad to finish.
course you could be lazy, don’t bother servicing the kit and just straight line everywhere 😀