Looks to me like you need more strapping, further up the bag. Also, maybe experiment with packing it different ways/with different stuff for more rigidity.
I got a rack now.
Just seen your photo. Would have lent you my bike packing gear.
@umop3pisdn started
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Looks to me like you need more strapping, further up the bag. Also, maybe experiment with packing it different ways/with different stuff for more rigidity.