We always took it down when not in residence, but since we cruised for the best part of 5 months last season that wasn’t often.
Surely the BOA specify their Burgee’s to last more than a season? If not perhaps they should!
It may be worth asking the Rear Commodore House David Pearce (house@bavariaowners.co.uk) for his comments on it as he buys the burgees on the Associations behalf and he may be able to go back to the manaufacturer with your concerns and ask them for their comment.
Regards
Rick