J,
Even if the yard put a great "tune" on the
rig after you "splashed" the boat in the spring,,,,,,,,,,you WOULD have to "tune" the
rig again in a week or so, depending on how warmed up/un-stressed the boat is. A sailboat is in a continuous change of rig tension, depending on it's water/air temperature. So after the boat "relaxes" in the water from the yard stay, you should "tune" the rig. The fiberglass hull will eventually change shape when it hits the water after a stay on the "hard".
Tuning the rig isn't "rocket science" if you can read a tuning meter. Get ahold of the rig's or boat's manufacturer and they will usually give you a "tuning how-to" to at least get started. After a while you will get accustomed of the needs of adjustment.....
.........Hey----------it's a Sailboat!!!!!!!!!!!Ya gotta love it.......
Now that's "just my opinion"..............capt'n tye