Magich

@Pieter710, Big thank you man!

Beautiful tall colas. good job bro

Wow looking Pro!

Hi @Magich! Indeed, DIY is always the best way to go! This guy spent years working on DIY roof for his vegetables, you'll find hundreds of useful informations: https://sjefgardentips.wordpress.com/2011/07/15/7-roof-over-sweet-peppers-or-tomatoes/. Here's another source describing precisely the building materials & process: https://steemit.com/todo/@fmgearner25/todo-build-your-own-tomato-roof-over-your-tomatos. Hope this will help, happy growing 👊

The Video is in German but it gives you a good idea how it can look like

If it’s just for rain run off I think your idea of making a roof structure with transparent plastic is probably best. You could build the frame out of wood or PVC. For early frosts i covered my plants in industrial sized plastic garbage bags overnight with stakes helping hold the bags from sticking on the buds too bad. That worked well for me. Good luck 👍