Bob: Over the years I've seen all kinds of roundings. Some are very smooth and other arn't so smooth. Here are some of the dynamics involved. Approaching the mark, the boat wants to keep going straight. The mainsail, which is like a very big rudder, wants to and will overpower the rudder. I've seen a lot of skippers try to fight and muscle the boat around and its not necessary. There is an easier way and that is for the mainsheet/traveler trimmer to ease the main as the skipper is making the turn. Depending on which point of sail they are going to continue on, the trimmer then resets the sail. Its like a dance with both partners working together.On tacking - the goal I use is that the tack should be completed in less than 30 seconds and less than 1 knot of speed is lost. 30 seconds is a long time but with a little practice you can get it down to 20 seconds. The faster you complete the tack, the less boat speed you lose but just jambing through the tack is not the way to go. Additionally, I see a lot of guys start the tack an immediately cut the sheet, which flops all over the place, and the new trimmer has to go like mad to gather up the slack. There is a better way. Start the tack and keep the sheet in place and under pressure until the sail backwinds and pushes the bow through the eye of the wind. In the meantime, the new trimmer is taking up slack. As soon as the bow goes thru the eye of the wind, the trimmer cuts the sheet by pulling straight up on the sheet. It just comes off so much easier that way than trying to unwind it. If it is a self tailing winch, it is a little tougher but it still works. You just have to be a little careful. The next thing I see often is the new trimmer madly cranking in on the sheet. This is not necessary. Take your time ( I don't mean all day) and let the sail power up. Watch your telltails carefully and get them flying. You also might want to reset you fairleads. If you have the Garhauer adjustable system it makes that adjsutment so much easier.If you do have the adjustable system, here's a tip. As the bow goes thrught the eye of the wind, the new trimmer is watching the sail to see how it breaks. Depending on which way it breaks, the failead adjustment is made accordingly. You might think how do I have time to do all this? The answer is - PRACTICE. one other thing to remember is to let the jib trimmer set up first before making any adjustments to the mainsail.What I suggest is that you take all the suggestions and mess around with them. See which one or combination works best for you.