As you are looking at a 10x8 tunnel, I assume you are going for one of the lightweight ones you can see on EBay a lot.

I have one of these as well as a glass greenhouse.

As the tubing is not very heavy and they are only really designed for reasonable weather, I don't think they are practical for bad winter winds.

So saying we have had some pretty bad gusts of wind already this year. One of the other plot holders has been wiser than me, in that they sited theirs so the side was facing the prevailing winds and buried the ground flaps into the ground and they have apparently had no problems.

Me on the other hand never thought about the prevailing winds and sited mine with the door facing the prevailing winds and came unstuck.

Got down the allotments to find mine on it's back, so I've had to rope mine down and have put up a windbreak to stop any further problems.

When I have finished cropping this year, I will resite mine but Ithink I will be prudent and still rope it down. On the other hand, if it seems to be a problem over winter, it is so simple to take the cover off but obviously this will restrict it's usefulness somewhat.