I doubt any gun could fire to a depth of 50 meters.
I see you are heavily into spearfishing. Throw up a few picks of some of the fish you have shot if you get a chance!!! I used to do a lot of diving always had the spear gun with me. Not that I was any good as I was not
Mine stays on my person.
The bike becomes a shield/fortification if necessary.
No bike access required means I can get clear of the bike to a "safer" place without leaving my lead dispenser behind.
Just seems un-shepherd-like to ever have your primary/secondary weapon(s) inaccessible.
Cheers,
Steve
+ 1
I keep my weapon strapped to my waist with a round in the chamber and use a good retention holster; while on the bikes I use Safariland retention holster. In addition, it would be kind of difficult to practice your draw from a motorcycle saddlebag.
I was just at Home Depot and they have a bunch of Husky brand of work pouches with metal belt clips that if one chose, may fit your needs. They range from $5.00 - $10.00.