Brassica protection

I am determined to grow brassicas successfully this year after the devastation caused by rabbits slugs and pigeons last year. I have some long green cloches which are ok for a short time, but I don't think enough light gets in and they are not tall enough for sprouts or Psb. My husband wants to build me a strong structure out of wood, covered with mesh, hammered deep into the ground to keep the rabbits out, but it sounds like a pretty permanent thing and I obviously need to rotate where I grow them. I have looked at the blue plastic hoop ideas covered with debris netting, and thought of pushing in some of those metal spikes and draping debris netting over those, which would be easy to move around each year. What have people used successfully? And what length of debris netting would I need to drape an area about 3 metres each side, high enough for sprouts? Thanks for any advice, I am going round in circles thinking about this!

 

The photo shows what I use. The hoops are stiff fence wire run through old garden hose and are supported by metal tubes pushed into the soil. I've made similar, though smaller covers using old hula hoops.
I plant through 1 metre wide membrane which helps conserve moisture and keep out cabbage root fly and to some extent slugs.
The cloches in the photo stand about 120 cm tall and are a tad wider than 1 metre. You'd need a cover about 3.5 metres (maybe a bit less) wide to leave a good margin for holding down the edges.
Debris netting would work but I'm not sure that it's as good as enviromesh for keeping out greenfly.

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Perfect, thank you, I can do that myself without bothering oh
Off to eBay!

Hmmm seems all Gardeners are buying 3 m wide 20 m long debris netting. I will have to fork out for 50 m by the looks of it:(

 

3 metres width will cover a 4' wide bed and give crop headroom of 3 feet. Should be enough for Brassicas

2.5 metres width will give crop headroom of 2 feet - bit tight for brassicas, on a 3' wide bed it will give crop headroom of 2' 6"

2 metres width will only give crop headroom of 1' 3" feet - but that would do as a "throw" over, say, a strawberry bed.

I got mine from
http://www.tarpaflex.co.uk/acatalog/Debris_Netting.html
looks like they are currently out of stock of 20M lengths - worth emailing them to ask when they will be back in stock, I found them very helpful (well ... they had a long stock lead time back when I last wanted some, but maybe its that time of year for them ...)

 

Than