Sounds as if you need to stay at Home to enjoy the luxury of a fully Air Conditioned living environment
, spending any time on a boat (any boat) is all a question of compromise.
Constantly expecting to run THREE A/C units and other electrical equipment
simultaneously which incurs maximum loading on the Generator
you can fully anticipate problems with breakers and other components in the associated Electrical System
Also, If you're resetting the breaker under load, you will also trash the breaker really quickly by building up the layers of carbon on the breaker contacts every time the contacts are manually reset, this carbon layering is caused by the Arc
or Spark at the contacts when the circuit is re-established while under load.
Please remember to isolate ALL circuits prior to resetting the breaker which has tripped, if you don't, then you're exposing your family
and friends to a possible dangerous situation of fire or even explosion if any propane
should be creeping around the lower areas of your vessel.
Change the breaker immediately and run your electrical system
where it's comfortable and therefore reliable i.e. 70 - 80% of full load.
If you run anything at Max it will fail sooner than later....