David’s suggestion would be the best solution. Your solution isn’t bad but double check the spec’s on the hoist for it to be able to lift the kart from the ground to both the trailer and kart stand, that you enough clearance between the hoist and kart.
Look at the long term, the hoist may work but consider being at the track. Every time you go to the grid, you’ll have to bring both the kart stand and the hoist, and again when you finish the track session.
Keep an eye on the Classifieds on EKN or on any local club for a used one. You might even want to post in the WTB section. Check any local kart shops if they might have one to sell or know of someone who does.
LAD Specialties customer / tony kart / rotax / kt100