BigJim,
What size gun are you using in the low vis conditions? I have a JBL Magnum and an Omer 82cm that I am happy with (mainly the Omer). I have a pole spear that work pretty good for the low visibility days, but have considered getting a shorty gun for close shooting. It looked like you had a little Biller or Riffe in your video?
I am really wanting to try for scallops! Not sure if there are any pinnacles with them at the cove. I may have to dive Trinidad for them.
Matt