Thanks to all who replied. I was overwhelmed with the number of good suggestions I received.
Too clarify one point, I am sailing solo with jib.
I think my problems are stemming from;
a) not being sheeted in enough. This is to keep maximum speed I think?
I will tell you it was ~18-25 mph winds and I weigh 160 lbs so I was a little bit on/over the edge of my skill level, especially by my self. In fact it was my first time sailing the boat solo.
The truth is it was a rush. But I am not quite ready to jump from the harness straight into the tack.
b) I think I was a bit too far aft too soon into the tack.
c) About coming over to soon, the boat never got far enough into the wind to come over so that is not part of the problem. However I think the point about adjusting the jib before going over to the new side should help.
Again thank you.
Mike