I am thinking to buy a sling pack for summer fishing when it is too hot for wearing a vest. I could imagine that it is very practical to move the bag quickly and easily on my back so that it doesn't disturb during fishing.
Geekwrapped sling bags have gotten good reviews
https://www.geekwrapped.com/guides/best-sling-bags
Does anybody have some experience with these bags and could give a recommendation?