Good morning Connerkip,
To answere your question we have alot of experience with hatches, from sail boats to trawlers to our current Cutwater 26.
The reality, no matter what the brand, size or shape they will ALL eventually craze!
Having lived in Florida & the Caribean for forty five years we have been through the drill, having said that we have & are loving in the Pacific North West & yes they will in time craze in this high latitude also.
Soooooooooooooo the solution is hatch covers.
They will prevent the crazing & the interior fading & let you sleep longer in the morning!
Take a look at our photo album "Elan"
Many photo's that might help, probabilly not the answere you wanted, but it's the answere?
Best of luck!
Mike & Barbara Narbin
M/V Elan
Cutwater 26 with Yanmar 180HP