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G'Day Roger,
I don't know of any ready made algorithms that would do what you want, but my approach would be to do something like this:
1. export a list of targets for the night;
2. group them by RA hour or half hour;
3. starting at the western most RA group, sort them by dec - ascending;
4. for the next RA group, sort them by dec - decending;
5. alternate ascending and descending sorting with each RA group.
The width of the RA group (1 hour or 1/2 hour, etc) depends on how many objects you have in each group. As 1 hour of RA equals 15°, if you start with 1 hour groups and find you have more than about 10 objects in the group then you'll be doing more slewing in RA than dec, so use a smaller RA group. At 1/2 hour RA group width, you can have about 20 objects in the group before the cumulative RA movements are more than the dec movements.
Al.
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