Nacra 500 MK2 Assembly Manual page 96

5.
Thread one end of the spinnaker sheet through one of
the outboard spinnaker blocks.
6.
Then through both the return blocks fixated on the
front crossbar.
7.
Feed the same end through the other outboard block.
8.
Hoist the spinnaker using the spinnaker halyard. Put
the remainder of the halyard away in the trampoline
bag.
9.
Furl the spinnaker by pulling on one side of the
spinnaker's drum furling line.
96.