Help with building a cucumber frame

I am building a cucumber frame out of furniture packing/palettes, I believe I have a workable design but could do with another (better) brain to resolve a couple of questions please. Self isolating can be difficult for brainstorming!
1) The material appears to be some kind of compressed card/paper, quite rigid and pretty strong. Should I use a wood saw or hacksaw to cut it? Me and power tools don't play well together so its all muscle power here.
2) I'm thinking I will need two struts for the top and two struts for the bottom to maintain the shape. It would be very useful if two of the struts could span the centre rather than an end. Is this going to be strong enough?
This is my drawing of one end of the frame.

any and all suggestions welcome
1) The material appears to be some kind of compressed card/paper, quite rigid and pretty strong. Should I use a wood saw or hacksaw to cut it? Me and power tools don't play well together so its all muscle power here.
2) I'm thinking I will need two struts for the top and two struts for the bottom to maintain the shape. It would be very useful if two of the struts could span the centre rather than an end. Is this going to be strong enough?
This is my drawing of one end of the frame.

any and all suggestions welcome

"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it." Sir Terry Pratchett
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The plan is to anchor one end of a roll of clematis netting under one cucumber pot, stretch the netting over the top of the frame, down the other side and anchor under the second pot. It is a version of a suggestion from this forum (think it might have been Pete.8) and I trialled it last year with a Heath-Robinson frame and it worked really well so quite optimistic.
Thank you for the info on the wood saw, much prefer a good long saw to my stupid hacksaw any day!
Thank you again, most helpful!
Works well enough , even with a bumper crop.