Thanks both. It seems that 2x8's at 16 inch centers isn't a million miles out then, so i'll just go with something like that. I'll be using decent 18mm plywood too (which is extortionate these days!).
I'll build a board in our new apartment, and I am keen on having it adjustable. Does anyone here has any experience with linear electric actuators? That seems like a neat way of changing the angle + making it stable.
I nearly went for a solution using an electric hoist for adjusting it and chains for then fixing it in position.
Everyone assumes that I will be the sole user of this wall, but my other half is more keen on climbing than I am.I never drag a foot along a board, obviously. But others might.Is chalkboard paint still the beta?
I'd go for these James, they do 30mm ones too https://www.hardwoodholds.co.uk/store/p179/Core_20mm_Foot_Holds.html