I find that I have managed to aquire a large backyard (~250-300m2) which I detest mowing the grass for; the yard slopes steeply. I'd like to give my partner (and myself!) a present of a pump track. Yay!* How much would it cost to get someone in to design a pump track? Who are the companies or people who do this? Does anyone have examples of pump tracks on slopy land? * I was going to put a granny flat in, but it will never work. The backyard is a bit inaccessible and steep. Oh well, silver linings and all that.