What to do ?

Tree in the polycrub

So when we came here we brought some fruit trees up with us. Most survived  but  in  spite of our best efforts  at protecting from the wind , they havent  provided  us with any fruit so far . This year has been much warmer , so there is some fruit on some trees . We shall have to wait and see what the eventuial yield is

The windbreak 

the tree that is struggling a bit 

And a row of trees are protected at one side by some bushes a stone wall  a bank, and by windbreak netting at the other. they have prodiced some fruit 

And we have planted some on a bank.

And they  are doing a bit better. For most of them the top part of the tree has died - probably exposed to just too mych wind in the winter Most have fruit . Interestingly its low down, near the ground

  So seeing how the trees in the polycrub have done ,  I want to provide some protection for through the winter.

But how ?

I  could build another polycrub and then move them all into it . Or i could provide some protection for where they are .
The problems :

• it would be difficult to  conncrete anything into the ground 
• the trees are all about 4 feet tall 
• The trees need to be accessible

Ideas ?