I made A thread way back when let me see if I can Find it.
Bascially, I clamped 2 2x4’s around the skeg and then lowered the trim on a block of wood to take the pressure off. Loosened the top 2 bolts and slid the plates in and slid the bolts in. Then loosened the bottom bolts and slid the rest of the plate in the. Torqued everything back up