It is easier to actuate a chronograph with your right hand, irrespective of dominance I believe. Although the alternative would be to get an Amvox II! But otherwise I usually make time and other settings with the watch off my wrist.
Regarding the weight of a watch, may I humbly suggest that you look at titanium-cased watches from now on and avoid Pt and Au, or perhaps just get to the gym more often.
All in fun my friend. Have a great Christmas with the family.
Andrew