I’m sorry I only saw this after coming home from the boat today. If I get to the boatyard tomorrow I will send photos.
Warning: my boat is not a production boat. It is a kit built wooden boat but the principles will be the same.
The spinnaker pole it held forward by a line that runs from the aft end of the pole forward through a block attached to the bow bulkhead (with reinforcements behind the bulkhead…I pulled mine off the bulkhead) and aft through a camcleat mounted under the deck. I will try to get photos for you.
In my case I have a ring set into the end of the pole and a block for a tack line.
I lead the tack line back to one of my mooring cleats on the foredeck, the one to windward, if I have a choice, as it helps support the pole.
Ratchet blocks are necessary on the spinnaker sheets typically anchored at the rowlock mounts.
When I asked Matt Newsom why my ratchet blocks were not larger, his response was :
“Do you see backstays”.
As in, if you cannot hold the spinnaker on relatively small ratchet blocks, you probably should not be flying it!
Hope that’s helpful,
Mark