Hi Paul
I think you've had plenty of comments on the Supernova Sailing Group Facebook page
https://www.facebook.com/groups/268146688224298 so I won't repeat here.
In summary, yes it's possible with a dedicated mount on the hatch cover, but there are other solutions such as on the mast (either DIY bracket or Carboteck bracket), or on the floor just below the hatch which is where I have it.
The Carboteck Forged Carbon Bracket and Bezel combo is priced at £95.
https://www.carboteck.com/product/micro-compass-bracket/. It allows the control lines (halyard, outhaul and Cunningham) to pass between the Tacktick and the mast.
Pete
SN1177