Well it's good biz to say time is money. What about winding in the hoses.
Just an idea but could a hose reel, bicycle chain and a motor be adapted to wind in your hoses altermatically?
It would have to cut out if the hose became stuck on something and be strong enough to pull 100meters of hose and the chain guarded. I saw this guy on youtube who had a very expensive system in the USA. But I recon it could be done cheaply. Anyone know a good type of motor to use you could run off a battery?