How deep is your sailing experience? Might be you'd only need a few pointers about some of the differences (you can go direct from point A to point B, you can make way when there's no
wind, if you gain an
engine docking might be easier, etc.).
If it's just stuff like that, most active
training captains could probably fix you right up.
Or if you gain
equipment -- ACs if you've had none before, more engines, whatever -- that's maybe more about
maintenance tips. Still, not difficult to solve...
There is a trawlerform.com, there's the annual
Trawler Fests, many of the
trawler brands have owners groups...
-Chris