Watering when on holiday

[lewic]

On thursday I am going away for four days, and am wondering what to do about watering things in my polytunnel (a DIY job with no end bits, so there is no humidity in there)

The chillis and peppers are small enough to put in gravel trays and move into my shed, but I've got some large tomato plants and aubergines in bottomless pots sunk into growbags, and they seem to dry out really quickly.

Have asked a couple of neighbours but they are also away, so need a backup plan!

Have a small paddling pool and was thinking of setting it up next to the polytunnel, carefully sliding the growbags into it then inflating it and filling it with water. Would this suffice, or is it likely to kill them off through overwatering?

I have also planted lots of sweetcorn seedlings, about 4" high, and am a bit worried about those too. Was thinking of putting up a couple of parasols to shade them, but this would be counterproductive if it rains..

Any advice appreciated!

[lewic]