We have been using firehouse for almost 30 years now. The old stuff was canvas
covered and would usually last about 2 years of full time cruising. But luckily that older style hose has been replaced with a much better "yellow" fire hose. We have been using the same piece on the snubber for 2 years and no signs of it falling apart.
You can obtain this hose for free if you are in the US just go to a local firehouse and ask them what fire station there damaged hose is sent to. If you go there and ask them they usually will be happy to give as much as you need.
To keep the chafe gear
from slipping or riding up the line take apiece of thin line and tie an end around the line in front of the chafe gear and then take the other end over the chafe gear and tie on the other side. This will prevent the chafe gear from moving.