Replying to How to be faster on SnowFlex

My new work is near an indoor snowflex facility (freestyle academy Stuttgart) with a kicker and some rails. Until recently I had never skied on snowflex. There is no water system to mist the slopes apart from a little garden spray bottle with water to mist the slopes by hand. People that bring their own skis rather than renting seem to be faster and get good use out of the kicker, but nobody seems to know why. So what makes the difference? What are the tricks to be fast on snowflex? I’m 6‘7“ and about 190lb and would be happy to invest into a pair of skis just for snowflex, but only if it makes me faster than the crappy rental skis. Any suggestions?