As many probably already know, and/or have stated, this episode is "Magnum's" version of the 1948 Bogie and Bacall classic "Key Largo". I love Bogie (Humphrey Bogart) and Bacall (Lauren Bacall) movies...but out of all 4 of them, "Key Largo" is my least favorite. Probably because practically the whole movie took place inside this big old house during a hurricane. In my opinion, it eventually became boring.
The "Magnum" episode "Big Blow" to me was no different. Most of the episode took place inside Robin's Nest, and had everyone holed up because of a hurricane. I become bored with it after a while, and lose interest.
To me, a lot of the plotlines didn't go together well, either, and it all seemed "choppy".
I also thought the idea that throughout all this wild storm smashing out windows, pregnant women screaming their heads off, drunk women ranting and raving, and shotgun blasts/gun fire, supposedly Robin Masters is upstairs the whole time and doesn't come down to check or see what the heck is happening?