I am looking at buying a 93 18ft Chaparral ltd or a 97 Marada 18ft executive ski boat. The Chaparall has has a 4cyl I/O on a dorsey trailer. The guy that has it does not know about the service history on it but said it has a small rotten spot in the wood around where the ski compartment is on the floor. He is asking $3600 for it. The Marada also has a 4cyl I/O with only 98 hrs on it and they are asking $6800. Do these boats have fiberglass or wood transoms and are either boat worth the money?