We have had our 1980, C-22 since it was new, and now started looking at C-25s. We plan on keeping our C-22 and letting our son's us it. This weekend we looked at 3 C-25s. 2 were swing keel, and one was a fixed keel. I have a few basic questions. 1. Isn't there a lock to the swing keel? Does it rock around, or when it is in the down position, does it wedge into the trunk and this wedging action keeps it from rocking from side to side? I believe that the keel weighs 1500 pounds, compared to the C-22's 550 pounds. When the keel is up, does it rock and bang? How hard is it to winch up the keel on the C-25? Is there any problem with the little key on the winch that the handle plugs onto?2. What is the height of the mast on a "Tall Rig" C-25?3. Can replacement anchor locker covers be purchased, and about how much do they cost?4. Is the right motor size about 10 HP? 5. The C-25s that we looked at had holding tanks. Our C-22, of course, has a porta-pottie. Is the holding tank worth the trouble, or would I be better off ripping out all the associated plumbing and just installing a porta-pottie on the C-25? There seems to be a pungent onion-like smell associated with it, even though it was very clean. I have read that the hoses can transmit smell. Can the smell penetrate through the holding tank walls too?6. It does appear that the keel in the up position is still deeper than the rudder. It this true, and does it protect the rudder from breaking off, if the boat is run into soft bottom?7. Does an Autohelm 1000 Autopilot have enough power for a C-25? I probably would have purchased the 2000, based on the preformance of the 1000 on our C-22.8. About how much does it cost to have all of the cushions recovered?9. Can a Suburban with a 350 tow a C-25 OK?10. Can a C-22 and C-25 sail together well? Is one much faster than the other? One of the C-25s that we are looking at is a 1980 just like our C-22 only bigger. We like the appearance of the wood inside of this boat, and wouldn't even consider a 250. We will probably get the boat surveyed, although the cost of it isn't really that much. I just want to avoid a major problem that I might be overlooking. If there are any other suggestions, comments, or things to watch out for on C-25s, I'm always open for suggestions. Thanks, Aldo