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The best way to use the Galileo's compass is to set the "reference bearing" based on the location/heading you want to go to, not the reciprocal heading. Once you've set your reference bearing (a filled in dot symbol) the Sol automatically shows you the headings for the 3 navigation patterns that use a compass; Out-and-Back/reciprocal, Square/Rectangle, and Triangle. It does this with little symbols. A set of parallel lines, upside down "T", and a triangle symbol. This makes it easy to do the pattern you want. You simply head off in the direction of the reference symbol until you've reached your target or whatever you planned as a turn reference (time, distance, psi, ect.) and then turn until you hit the symbol for your pattern. What my buddy/wife and I use as a landmark determines whether we shoot the reference bearing on the boat or in the water. If we are using something on land as a reference (parallel to the shoreline, a lighthouse, building, hilltop,etc.), we shoot from the boat (it's just easier). If we are using an underwater object or a known/pre-determined heading, we shoot from underwater, usually starting from the anchor line. So we can use the anchor line as our underwater reference and end point (that's the theory anyway, since we've managed to over/undershoot the anchor line several times and popped-up with a "slight" surface swim left to get back to the boat).
