The above shows a conventional spinnaker system using a spinnaker chute and conventional pole.

The twin pole launcher system is especially effective when sailing with small children who do not have the strength to push out the spinnaker pole. This system will allow you to compete with small children in all breeze strengths with relative ease. The system has been in use in the 505 class for about 20 years. The above drawing should also show a shock cord running up the length of the pole back to an exit block on the boom which then turns around a block at the goose-neck end of the boom and out an exit block and out to the other pole. The sheet end of the pole will have one hole drilled in the plastic end plug and the mast end will have 2 holes. One hole for the launcher rope and one for the shock cord to stow the pole on the boom when not in use.