Try doing basic sled repairs at home using only tool kit from sled. You figure out pretty quick what works and what else is needed.
X2. Having the right tools to get into tight or awkward spots on the sled is important. One mistake I've made in the past is carrying "one of everything" which was good until I only had 1 15mm wrench when I needed two to tighten the real idler wheels. Luckily I always have a vice grips (highly recommend). I had a bolt holding my rear idlers fall out just over ladder in Renshaw last year. Luckily realized it right away and it was early in the day, only 930ish. Nursed it back to the cabin because if the tensions bolts slid back at all I would have torn my track. From my experience of taking my skid apart multiple times I knew the support shaft in the skid used the same size bolt as the one that fell out. So I took the support out and promise myself not to hit any jumps for the rest of the day LOL however I also needed something to replace the rubber flange and metal washer which were also gone. In the renshaw cabin they had recently put new coat hooks on the walls and each had two washers (a big and a small). So I took about 6 hooks off the walls and used them to tighten the shaft and ride for the rest of the day. That night went to spindrift and got new parts. Next day reinstalled all the washers and hooks in the cabin. Moral of the story, sometimes you need to get creative.