Fix a Faulty Boat Speedometer 

If the hose moves freely, splice the new hose to the old hose and ease it through. It might be clamped to the boat somewhere, make sure it's free.

Ideally it should be one piece, a splice will disturb the flow and give a faulty reading

@@MarksBoatServices I agree but its not that accurate anyway. I was wondering what size to get that would fit on the cut ends. I only need about an inch length of new hose. Or can you just buy the complete hose? It goes on a 17 foot cheetah. The off brand cheetah

Try a bicycle tire pump with a basketball needle, a little tape around the needle, stick it in the hose, and zip tie the hose to it.

Thank you