If there are many squid boats it follows that there is a large mass of squid out there.
Squid being the incredible eaters they are usually deplete the local area of all marine life.
The squid usually mean a few months of very depressed big game opportunities in the area.
I would just avoid the area completely.
Seriously,
Most people will often associate squid boats with a large number of squid which often get seen as a fish magnet/fish candy.
Fishing with or around these areas has been productive for many chasing Wsb, YT and Halis.
A few people will try to keep the presence of dozens of 60 foot vessels lit up like a Xmas tree a secret.
Tight lines.