Extra hatch in cabin roof?

Sep 30, 2013
3,595
1988 Catalina 22 North Florida
I saw
a picture somewhere of a Vega with a smallish hatch installed just forward of the slider. It looked like a great idea for ventilation in hot climates, not
to mention letting more light in, and giving a view of the rigging from
inside.Interestingly, the hatch I saw opened aft, not forward. Just wondering if anyone has done this, or seen it done.