Hi Andrei, Based upon your E-mail address, it appears you are in the business of understanding numbers. When it comes to four digit repair projects, we should all be a bit analytical. You may want to see what is involved with a rapair such as this to understand first hand what either you, or a boatyard will go through to fix the problems. I will make you a better negotiator. Take a few minutes and check out the pages of similar projects, which have been documented on the Web. http://havasumontgomerys.piczo.com/?g=23004804&cr=1 As you look at these photos, think about this M23 being just like your M17, only larger. http://www.msogphotosite.com/M17MM.html This link is the album directory for lots of M-17, CB removal projects. These examples of some pretty serious repairs were completed by fellow Monty owners, none of which are in the business of repairing boats. There are examples of boat lifting in the garage and in the driveway under the Maintenance and Modifications sections which you may also find helpful. One here at: http://www.msogphotosite.com/GenMM.html And more (M-15) here: http://www.msogphotosite.com/M15MM.html I am not suggesting you do this yourself as we all have our limits when it comes to technical stuff. However, if you have a digital camera, with winter coming up, you may be able to turn this into a long project, while sending photo back and forth to one of these guys who have done this before, and could tell you where to go for information, parts, materials, etc. My first thought: Buy the book by Don Casey $22.00 "Hull and deck repair" Easy to read and understand. Had to throw in my $.02 Bill