"knees"

[3rdday]

I want to install large knees or gussets from my stringers to the transom, or the addition of an outboard bracket. ow high up should the knees go relative to the deck of the bracket platform bolt thru, Should I also add a longitudinal beam across the transom ?

I have seen on my same model boat where twins were added, the transom sagged and bowed so badly that it popped the transom out of the cap where the two overlap with the shoe box joint