Yes, you are correct. Your halyard should have a stopper ball at the knot that ties it to the head of the kite that stops on the bail and prevents the sail from being sucked up behind it.

If you have the bail system, you are going to have to get the end of the spin pole lower than normal. The spinnaker luffs mysteriously grew sometime between the bail system and the line systems that were installed on the masts (that, or my hoist heights kept getting lower on my factory masts). In order to get a newer kite to work on that system, you will need to pre-bend the pole about 30% shy of breaking it if you don't ease the middle section. Lord help you if you run internal rigging and fittings that weaken the pole further!