I have been averaging one Pacifc crossing a month for the last several years. I have found a GMT 2 on my wrist most of the time. The ease of setting to local time and still have home time was simple.
On my last trip, I decided to not set the GMT to the local time and just add 15 hrs to my hometime. It worked just fine and actually gave me a degree of mindfulness of my environment locally and at home that an adjusted watch did not.