Of the three issues I'm experiencing this one is the most perplexing. I have only been able to go out to the boat on the weekends, and last weekend when I got to the boat the A/C units were not running. No power. None of the Circuit breakers were tripped at the main panel, but after much searching I found that the main Shore 2 breaker was tripped. (it's in the transom locker where the shore power cords are connected.) I have LED"s on my shore cords and they are lit on both ends. After resetting the breaker the A/C units came back on but only ran for about a minute then the breaker tripped again. Since the main power is being removed I don't get an error message on the AC Panels. I could only see water coming from one of the Thru hulls in the time that they were running. The strainer and seacock are in a place that my old fat body cannot reach. It was so hot that day (105) that I ended up with a mild case of heat stroke trying to get down there to get at the strainer.
I'm making several assumptions here:
1) the strainer is clogged, or the pickup thru hull is clogged with the durn grass that grows in the lake.
2) This is causing the pump to pull more current than normal and when the compressors kick on it's over 30A, and that kicks the main breaker at the shore power input.
3) Since I was only able to see one exit thru hull, I'm assuming that the others have lost prime.
I got fuddled during the day (Heat) and didn't follow my normal troubleshooting procedure. I should have turned all the units off and then turned them on one at a time.
I cannot reach the strainer from the mid salon hatch. I have heard tales that the aft master cabin stairs come out, but I was not able to pull them up easily. They have to weigh a metric ton. I f I could get them up I think I could get to the seacock and the AC Strainer.

Does anyone know a trick to get at the AC Strainer?
Has anyone had this happen to them? I'm really surprised that the Main Breaker tripped. Really the only thing on Shore 2 is the HVAC.
I'm tempted to call the HVAC guy that the Marina recommended, but I don't want to miss something easy I could fix myself.

thanks