Hi Noel, I would not worry to much about mounting a swim ladder on your C22. It's pretty straight forward. You will not have any leaks if sealed properly. There are lots of ladders out there to choose from. I would recommend one from Catalina Direct, Part #D1137. It sells for $170.13. This one mounts with six bolts, three on each side. The mounting plates are well above the water line, so leaks are not an issue. Also look on this site and other sites for items for sale. There is of course E-Bay as well. To mount the swim ladder, mark out the holes on the starboard transom, you will need a backing plate as well, this of course is on the inside of your boat, drill the holes in the transom first, then have someone hold the backing plate( your choice of material, wood, metal, ect. maybe the ladder will come with it's own backing plates-me not sure!)mark that with a punch(long nail), then drill that, use some of 3M's 4200 adhesive and squirt some in the drilled holes, and squeeze some onto the back of the monting plates of the ladder, slip one bolt through one hole on each side and insert into the holes and backing plates. After placing all the bolts in and snugging them down a bit, clean any adhesive up, don't climb on the ladder until the next day! Let that adhesive setup some. When the next day comes, tighten the nuts some more. Now you can climb on board. Be sure to put the caps on the little legs that support the ladder when in the down position. You might want to stock up on these caps, they tend to come off at times. I buy the white rubber caps at wal-mart, or drug stores. The kind that are for canes, and or, chair legs. Four for $1.00, 1" in size I believe. The only other thing, is a velcro strap, or bungee, to hold your ladder up when not used. this is simply wrapped around the ladder and the stern pulpit. Have fun, it's easy! Jay