Transom integrity

[Fldivebum]

These can crack from improper installation as well. Most transoms are not a 90 degree angle like typical angle stock. When you screw the top down tight and then do the same for the leg on back side, it puts stress on the corner along the length. This will cause it to crack immediately or in a short time. 'L' angle, as it is commonly called, is usually 6061 T6 or 7075 T6 aluminum. They are strong, however, very brittle. Add vibrations of a running engine and will cause all sorts of extra stress. I believe these are to protect edges of transom from being easily damaged.

[SkunkBoat]

That piece of trim is the achilles heel of many outboard boats, not just Wellcraft but Grady White and others.

When they build the hulls the transoms are full. For outboards, they cut away the transom for the outboard configuration, exposing the plywood. They build the boat in two pieces (hull & cap). The cap covers the transom but is not joined to it. Instead of taking another day of production to glass over the open seam(and exposed wood), they slap a piece of aluminum trim over the edge with 5200 & some screws or rivets. Over time the seal is lost and water soaks the transom.