I'm really surprised that no one has mentioned shifting in and out of diff lock/4wd on the fly. This article again claims that this is a BIG no no, but in my opinion fails to explain why. I always assumed this was kind of a blanket, procedural statement to protect against an operator trying to slam it into 4wd with the pedal to the floor, spinning and trying to climb a hill which is obviously stupid. If I were honda I would probably put it in the manual to come to a complete stop too, HOWEVER......I almost always shift in and out of diff lock/4wd on the fly BUT I always do it in a "torque neutral" straight ahead kind of "coast". I seems to me that the diffs/4wd do not engage until the unit starts moving anyhow....
I would almost argue that waiting until you need 4wd, stopping mid hill or mud hole to engage, and then taking off in a high torque situation as the 4wd engages would be harder on the unit then a nice smooth transition during a slow roll............thoughts?