not to tight
I dont have my boat repair book right here, so I dont remeber the name of it. But it will tell you how to tune your rigging. I like my rigging a little lose. When you are healed over the lee shrouds should be lose but firm when not under sail. Be carful most new boat owners tighten the rigging to much, on another web site an owner said he tightend so much that he cracked the hull. Mac's are not very strong.
