scubadude79
Contributor
For me, in my experience, the gear I carry does represent a minimum. It also allows me to deal with virtually any problem that arises.
For instance, I have used the reel for impromptu searches (far easier and quicker than using a compass). I have used the reel and DSMB to rapidly surface my friends leaking camera housing from 26m (and saved her DSLR in the process). I have used the knife a thousand times on the dive boat (much less in the water). I've used the whistle to wake sleeping boatmen when we needed picking up on many occasions. Of course, I've used the reel for gentle wreck penetrations and the reel/dsmb for ascents on hundreds of occasions also.
The slate isn't critical, I suppose. However, I instruct - so my waterproof notebook contains all the notes I need to run lessons. I can also use it to jot down maps for unfamiliar sites...and when I dive tech, it contains my back-up deco plan/s. Underwater, it is good for conveying difficult information, taking notes and making sketches of sites etc etc.
The torch isn't critical either, but the modern LED torches are so small and reliable, it is no hassle to carry one. I dive in an area with many wrecks, so it is useful for illumination (it does not replace a proper primary light for penetrations). I've used the torch to help sight photos in dark conditions..and for signaling in bad viz or light (above and below water). At the very basic level, it is great for looking inside nooks and crannies on reefs.
I would not dive without the knife, reel, whistle and dsmb. The torch and slate are optional, but of such little distraction that I carry them as routine.
You bring up a great point. I guess the bigger deal is not necessarily what you dive with, but how you manage your equipment package. Having a strategy instead of cramming it all into one pocket allows you to dive with more, and have the resources needed if something came up.
Thanks for the insight!