Replying to Summer Setup

I have a decent amount of room in my yard but not a ton. I built a drop in using my hot tub as support(I think it's like 3 1/2ish feet in height.) the ramp is decently steep. I want to ski in the summer but I'm not sure what the best way to do this is. How do I build the kicker so I don't lose speed? I've also heard it's good to but about a foot or two of construction fence and then the rest astro turf for speed/edge control is this true? If I absolutely need to I can build the drop in higher but I would much rather put the money into building a nice legit box and a couple of pvc rails(any suggestions for some cool, fun, and good progression rail setups?)