War Eagle has some in the 92" beam width....can get them pretty much however you want 'em (20' and 23' length). Sea Ark has an 18' model, or used to (I haven't checked them in ages), also 92" beam but more of a work boat. I rigged a War Eagle once that the guy put his ATV on the front deck and used to travel across the river to an island. Kind of a cool setup.
Look at Swamp People TV show, I think some of them are using Sea Ark and others. Weldbilt might even have a big work boat but I don't care for weldbilt boats, just personal preference and opinion. Those guys will pile a thousand lbs + of gators into a boat!
I owned a sea ark for a while (1872) with a home-made side console. Originally bought it with a TILLER steer 115 Yamaha jet (115/80) which was a beast; but sucked on the mud bottom areas that I was bow fishing. Traded it for a console steered 88 Johnson. VERY stable boat; I felt like I could park the truck in it.