I have a Laser that was built in 76 and is currently rigged in the pre 2001 mode. I am currently refitting the boat and will be sailing it along with my daughter. I am 5' 8" around 165# and My daughter is 5'0" and around 105#...my question is, should I consider the 2001 upgrades for the vang and outhaul and cunningham or just parts of those and if I chose to do that how much is required to keep the boat legal, in other words do I have to do all the changes or none of the changes or can I phase them in and still maintian the legality of the boat. Thoughts?