I'm just catching fish from mercury powered tracker currently, not really an "offshore" boat. I'm in the market looking for a Defiance, Parker, Grady, Pursuit, Albermarle or similar. The problem is, there is very little market around here to shop or deal with, as I'm sure you are aware. Anytime I'm in FL or even Maryland there are vastly more choices and dealers to talk to than around here. For aluminum boats, I'd second one of the starcraft 19 degree deadrise hulls as mentioned earlier here, but they are smaller than what you are probably looking for.
The Hewsecraft Ocean Pro would be great if you want a big boat but aren't concerned with rough water performance. Keep in mind, the great lakes is nothing more than a secondary market to them. They constantly advertise as being the most popular boat in "Alaska", where most of the fishing I've seen is within sight of shore, often in inner passage ways. The boats are designed to run in saltwater. The 240 OP is worse than the 220 OP for being bow heavy because the helm to bow distance was maintained on the 240, the same is with their core design 220. This "forward justified" layout as they call it in their literature makes it difficult for a single outboard to lift and give you a good attitude on your bow in rough seas, especially in freshwater. Its obvious they have a rather limited dealer network around the great lakes with very little in the way of actual dealers with mechanical / welding repair capabilities in this region. The hulls were never developed for nor tested on the great lakes.
In the end, you have to make our choice and my only recommendation is to drive it in a good north wind before putting your money down on one. Make up your own mind as to whether the boat inspires confidence as compared to a Grady or Parker. If you only plan to fish on fair weather days, it may be a decent choice for the amount of room offered. At the end of the day, its a bow heavy 15 degree deadrise boat that tows easy for its size.