[quote=Timbo] Click on the Online Store link at the top of this page, buy Rick White's "Catamaran Racing for the 90's". It does a great job of explaining all you need to know about tacking, gybes, etc. as well as boat set up, mast rake, sail trim, etc.

Got it and read it cover to cover. Nothing specific on the hobie 20 so I compare it to the p19.
If you are on stbd and want to tack to port what do you key on to know you can cross?