Another thing that would be good to check while she's out of the water is the condition of the rudder. From Jack Hornor's review of P30:
"The only consistently reoccurring problem noted with a majority of Pearson 30's is sloppy rudders that results from Pearson's use of Delrin bushings in a fiberglass rudder post tube. Worn bushings are easily replaced without considerable expense. Through about hull number 200, Pearson used an aluminum rudder post that was prone to failure. These boats were recalled by Pearson and retrofitted with rudders with stainless steel post. It is unlikely there are boats with aluminum rudder post but its a good idea to check if the hull number is below 200. "
Great boat, we love ours (1974 P30).