i find it very strange... every aro ive known continually hits the glass / hood in the 500 gal square tank and the 125 i have without "learning" anything. especially silvers.
i guess mesh wouldn't work. but a net is very different from a plastic bag as one of you stated before. i can break a hefty with my finger, but not like, the same plastic netting that they use to make crab traps with.
i think better than mesh is orange fencing then. you know, the kind thats used in construction wrapped around the delineators.
theres NO WAY any aro can break through that. yet it would soften the impact 10fold compared to glass. its better to splash some measley water than have a broken tank, dead-on-impact aro.
EDIT: oh and im not talking about the paper-thin fencing. im talking about the flexible plastic one. they take a 300 lb built samoan guy 5 seconds of hard pulling to even start to stretch so the velocity of a pointed 2-3foot fish throwing itself at it couldn't do dust to it.