I hear ya. My knees ain't what they used to be. Steps get tough, especially after sitting all day and worse when standing all day. Have you looked at Mod-V boats. Not as deep as Deep-V. Great on performance, however they don't ride as smooth on big chop/waves. My biggest concern with Bass boat style decks is bending down or kneeling to access anything and everything below deck. Getting up off my knees can be tougher than steps.
Another option is a pontoon boat. They aren't fast or cheap to operate, but they are comfortable and can be made into great fishing machines.
HOI Crappie Club
Where family and friends come to compete for a little more than bragging rights.
Quick, someone teach me how to fish so I can win this tournament!!!