Level the boat fore and aft and etch a waterline with a laser level. Apply bottom paint below this line.
There was a diaphragm that told the lifting cables when to release the hooks. It sensed water pressure when the boat landed in the water and was a safety feature. I have removed the hardware and the opening needs to be glassed over or custom fitted for a thru-hull that could be used for the grey tank overboard valve.
Glass and fair the gash on the portside. It’s above the waterline.
Hydraulic steering works but should have a fluid change and any other servicing.