Post 42 Sportfish Hi Pitched turbo whistle

I was not aware of a gelcoat problem however I did notice a few areas of minor cracking which the dealer has indicated will be repaired. Is there a range of model years where this condition is prevalent?

Upon further research, it seems there has been a fair amount of previous repair work done on this 2001 Post, some of which is yellowing and needs to be corrected again. If I couple that with the annoying turbo whine and a newly surfacing issue related to handling problems in following seas, I think it may be time to resume the search for a quality convertible sportfish. Any suggestions of known boats or specific boats to look for are welcome. We will be boating/fishing on Lake Erie, east central area where 2-4 short chop is the order of the day. 36'-42' size range, prefer Cat power capable of high 20's, low 30's cruise (mph). Don't necessarily need two staterooms but separate shower is a must for the wife. Galley down is her preference but not a deal breaker. Trolling valves are a must, either existing or practical to install.