Re: Neutral or in gear?
If you do put it in gear I would recommend forward gear. The reverse gear and clutch dog on some engines have square teeth and are designed to mesh when things are turning. Now there is a spring, but if the gear and dog happen to be lined up wrong you could be putting a lot of stress on the shift linkage, spring, cable, etc. In forward the clutch dog and forward gear have teeth that have ramps and they will mesh, plus forward gear is where the shift cam is actually shortest so you don't have to worry about stressing the shift components. I personally don't worry about it and trailer in neutral and have never had a problem.