Individual boat entering multiple divisions for a single race

We organise ocean races where a single boat can be entered in
multiple divisions. All of these divisions have the same start time
and location. They all finish at the same location.

We've been looking at SailWave, primarily because the web publishing
facilities are so much better than what we have now.

Does anyone have any suggestions as to how we can copy with our
situation?

For example, a boat was recently entered into the following divisions:
PHD - performance handicap (ToT)
AMS - Australian Measurement System (http://www.amsyachts.org.au/)
IRC
IMS
THD - two-handed division, scored as per PHD

2002 Rudder Cup
Ocean Racing Club of Victoria
htpp://www.orcv.org.au