Had a similar discussion with a guy in our New Zealand fleet. Check this document out, skip to the mast set up and Jib Position sections.
http://hobieclass.hobiecat.net.au/wp-co ... ing_16.pdfIn short, depending on your crew weight the hole you use on the sidestay might not be the same as others. Don't be afraid to move up or down a hole when competing (I'm too lazy to do it on recreational sails) depending on the wind conditions and your total crew weight. Rake forwards powers up the rig, mast rake backwards unpowers the rig (as to why, I forgot, but I used to know). Team "Big Macs" would want to power it up more to stay competitive, i.e. even if everybody else is on hole three (from the top), they may be on hole two or one.
On very high wind sailing days, I've knocked it back to hole 5 before. I think that particular day, my mates were on hole 6 on the other boat.
Hole three from the top seems to be largely regarded as standard.
Once you've gotten the feel of this adjustment, start fooling around with others. Rudder pitch inwards/outwards, jib clew hole, jib tack hole, jib halyard, outhaul, downhaul, trapeze heights, batten tension etc.
Good luck