Current design has a crude castellated gear (I would not glorify it to
refer to it as a dog clutch)
This slides from side to side so that it is completely disengaged in the
centre and engages one or the other half shaft when moved to either side.
There is an interconnected disk brake that locks the undriven half shaft.

One problem is that this leaves the diff spinning one way or the other
on every launch. Now Borg-Warner make a good product but I doubt the
engineers had his treatment in mind...
Another problem is the poorly supported axle to the drum.

This doesn't necessarily mean that you will have problems. The Cornish
Gliding Club has a winch based on a similar design, and it has provided good
service for many years (only problems have been with the engine). The
hassle of getting out between launches to physically change the driven side
keeps the winch driver fit! 8-)

Keith