Hi Michael,
I was playing around with Nsided and modelled a test surface with a 5 sided hole (see attached) applied Nsided patch and it didn't come out to crash hot so I thought I'd uploaded it for you to test other solutions maybe.
Anyone else can have a go and see if you can get a nice tangent continuous surface from all 5 surface edges :)
BTW I have one solution however it's still not perfect.
Cheers
~Danny~
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