I'm renting so need to find a better solution so the shade cloth screen doesn't become a sail in the wind. Balcony is L shaped and faces NNE and ENE. The balcony receives direct sun, rain, and frequent sea breezes/winds so needs to be a solution that is UV resistant and durable. Currently attached with the included poly rope but it doesn't stop the screen becoming a sail in the wind.
The Pillar screen pictured is too high/wide for the balcony and I can't wrap the screen any further over the top railing due to strata by-laws (or swap it so it's wrapped over the other face). I'd like to lower the screen so it's not wrapping over the top rail and anchor the excess to the tiled balcony floor on my property side rather than over the lip (not allowed).
Is there some strong but semi-temporary adhesive that could stick some sort of anchor plates outdoors that is reasonably resistant to UV, rain and salt dewy air (ie able to be removed with solvent)? Otherwise, I'm guessing weights of some kind are the alternative but how much weight would I need to stop the screen becoming a sail in the wind?

