An oh so obvious tip: (but it took me years to catch on to it) I often will just drop the rear scraper blade when parking my tractor, in lieu of using the parking brake. But after forgetting to raise it when driving off, and leaving a big divot in my driveway gravel, I finally figured out to simply position the implement raising lever in the UP position after the engine is off, that way it's an idiot proof way to raise the scraper blade before driving off.
Another thing I have been doing on my 200 hour L3301: NOT using the clutch for shifting between the speed ranges (HST of course). Like others have mentioned, I was having a hard time shifting, not real bad, just a minor annoyance, then one day for some reason I tried it without the clutch, much better, quicker and easier and the tractor doesn't seem to mind at all/no grinding.