Inflation hose
A piece of hose from the hardware store that fits the mouth valve makes topping up on the water much easier.
The Anfibio blog recommends this trick: you don't have to lean out of the boat or get out, you have a more comfortable posture and more lung power. The hose weighs about 40 grams and fits main and seat valves.
Sources and further reading
Research as of 13 Nov 2026. We have marked manufacturer information as such.