Great for integrating bags into your boat
I have Flow-Rite fittings on all four bags that I integrated into my boat. They are secure when locked into place but unlock and remove quickly and easily. Although these fittings are marketed as a Fly High product, they work on my two Straight Line sacs as well as they work on my two Fly High sacs. I use the 1 inch size on larger bags, but this 3/4 inch size if handy for a smaller add-on sac.
It takes a little heat from an electric heat gun or carefully applied with a torch to get these into 3/4 inch spiral-reinforced hose. You could then secure them with a screw-drive hose clamp, but that gives your work an amateurish look and the clamps have a sharp "tail" that likes to cut your hands and your fat sac. A better hose clamp to use is a pinch clamp like an Oetiker. You do have to buy a special pair of pliers to pinch the Oetiker clamps, but the end result is better.