Bracket tub shape opinions

[warthog5]

The pics of the seamark look like the tub's bottom is straight back from the transom, parallel with the boat's keel.

That is correct from what I see too, thus it has more flotation.

The flotation can be deceiving for us average Joe. it's not until this stuff is all mounted and floated until you get a better understanding.

Let's look at the side of the tub alone. Where will the waterline be?

Upon first looking at it will it be 3in, 4in or 5in from the underside of the platform?

The point here is, that anything above the waterline just add's weight and has no effect on flotation to help the boat sit level.
Only what is submerged does have a effect. So we want more area that will be submerged to help the boat sit level.

That means a wider and deeper tub. It also means more volume going aft of the transom.

From this:



To this: