Read and Fix
Best to start with a thorough checkup of the rigging, keel assembly, rudder, sails etc. Good references are available thru Catalina 22 National Sailing Association (can join thru Karen Miller, 920 Flaming Tree Way, Monument, CO 80132, or kmillerc22@aol.com). They have a good technical manual. Also look at www.spiritone.com/~mack/c22/ for more information. There is also good advice and a source of parts in a handbook by "Catalina Direct", ph. 800-959-72745. Regarding hull scars, I'd recommend using a good marine epoxy filler like Interlux's "Interprotect Watertite". Hope you like your 74 as much as I like my 75 Cat 22.