John I have just finished my first season with a 20 x 12 foot tunnel. I have half mesh sliding doors,(for which I have covered frames to keep a bit warmer in winter ) In the warmest periods I have the doors open and have net curtains to keep animals out, that are secured top and bottom. I give a thorough watering once a week and then what I can once or twice during the week as work commitments allow. For me the main challenge is getting up there at times that no one else will be watering as the water pressure all but disappears if other allotmenteers are watering. I do have 3 water butts as a back up plan if I’m really short of time and cannot use the hose 🙂
Otherwise there is generally less weeding but you will need extra time for picking and tying in etc.
