I had to scratch my head for a moment and go back and read my posts, but my thoughts were with the resin filled trench= extra non buoyant weight, + if your repairs were not so good you will have a board with lots of water in the foam= extra non buoyant weight! = by now the foam would probably be less buoyant as the cells get crushed and the the deck and bottom start to be compressed.
If I remember rightly your board was a mass of deck dents and delaminations, it was close to the end of its life when you posted its pictures before, time to go new
The new board syndrome , It's a happy one.......
The stoke of a brand new board, wake up and smell the resin
A board more suited to what you are doing
NO paddling weight that you don't need around
Easier to paddle
Easier to catch waves earlier
More stable for pop up
An extra feeling of confidence
More than 2 or 3 green waves per session successfully ridden
More enjoyment as you achieve more
So many lols it could be a lolly shop got get your fill.
Just don't regress to a soft board it would be a mistake at this stage.
I've taken up troll hunting just for fun, instead of a rifle I'll just use a pun! 冲浪爷爷