I have owned 2 deck over’s and by far preferred them to any of the open hulls I owned car motor or aircraft. The only one legitimate down fall I have seen with a deck over is you can’t store large objects in the bottom of the boat. However everything else about them is better. I got tangled up in a cable in front of a dam and if my boat wasn’t a deck over it would have sunk. I love my deck over because I use it to teach people how to drive and don’t worry about them sinking my boat. I would never let a rookie drive my boat if it wasn’t a deck over. I have yet to have anything go thru my prop because I generally don’t leave things on my deck. All I can say is if you want a 14ft or smaller airboat that is hard to sink and very safe get a deck over a small deck over is less prone to sinking then a larger high sided hull up to a point. I think the advantages depend on what you do with your boat a deck over is a safe small boat that is great for around three people thus you keep the boat a little smaller. If you haul a crew of 5 or so then your boat must be large, long and high sided and at that point your not concerned about a light, little nimble boat. I may be wrong but I’m guessing deck over’s originally came from people who wanted to run a small light nimble boat that was safe so instead of building a larger wider longer hull the boy’s in the glades just decked them over. Think about it all the old deck overs that are 20,30 plus years old that we still see running around all have four bangers on them. They new building a bigger heavier boat that is harder to sink would get stuck and wouldn’t run well with a 4 banger on them. So I’m saying if you want a boat 14ft or shorter boat a deck over is sweet option but if you want a large heavy boat to haul large amounts of people there is no point of a deck over, just build a large high sided boat.