My line runs through ivy, clematis and other stuff.
I've built avalanche shelters from wood, cheap solution, wickets etc do loads of pressure treated timber, as I'm sure your aware.
Leaving the front open allows access.
Can also use chicken wire. I pick up things from pound shops for edging gardens, they hold stuff out of the way, then attack any intruders With your secuteurs.
If you want cloches try the bargain shops like b and m bargains they were selling them cheaper.