I would honestly say with any type of tracks you will always have to cover it up or build a box to put it in. Rain will decrease the consistency by a lot and from personal experience, even dust will affect it. Your best bet will be probably building some sort of container( cardboard, plastic, wood, etc.) to keep it safe.
2017 Hovercraft Division B : 1/1/1/3/3
18-19 Events(Probs) : Anatomy & Phys, EL Glider, Fossils, Dynamic Planet, Battery Buggy
National Tournament at Wright State 2017 : Third Place @ Hovercraft
National Tournament at Colorado State 2018 : Seventh Place @ Roller coaster (DEPRESSION)