We love our 2004/5 SM COCO, currently on the hard in Greece.
As part of a post COVID set of upgrades while staying on the hard, we are considering installing a full size Lewmar style hatch, opening forward, on the roof of the rear master cabin, when we ,hopefully get back to Greece in mid-September. My wife finds it pretty hot in this cabin, at anchor in the summer due to little or no direct airflow. Yes , we do have a wind scoop , which can be hooked through the rear hatch, but this has limited effectiveness.
If anyone has tried this, i would welcome their experiences and constructive comments, even alternate solutions I am aware there is a a degree of slope on this deck roof which may involve some extra work.
Amel SM 434