twodogs1969 said..
Be ready for the current when you go around seal rocks.
Absolutely, it took me 3 hours to get from Edith Breaker to Sugarloaf Bay last month, had to go outside of the outlying Seal Rocks as the sea & swell(but with very little wind) was making it too dicey to go in between the rocks & the mainland.
I reckon the current was at 3 or even 4 knots in close to Seal Rocks, it certainly was 3 or 4 knots out around the 100m depth contour, which was very enjoyable on the way down the coast, consistent 8, 9 & 10 kts SOG, highest speed 11.2kts current & swell assisted SOG was awesome fun in the little junk rigged Top Hat

If you want to go the Broughton, on a different trip I spoke to a local at Karuah & got some local knowledge, he said North/Providence Bay at Broughton is ok in a NE'er upto 20 kts, I was a bit sceptical but it was fine in a 15 kt NE'er one evening before a southerly came in, the outlying rocks there dampen the seas and swell nicely, good anchoring in sand, there is also 1 courtesy mooring.
earth.nullschool.net/#current/ocean/surface/currents/orthographic=-207.69,-31.51,1957 is another current website.