i run at 750 feet above sea level, and on fresh water with no chop with a 32 foot active thunder 86 gps what would i expect to run in the sea with some chop.

My best guess is 89.

upper 80's. Salt water is good for at least 1-2 mph.

Are you looking for 90?
My boat is about 2mph faster in calm salt vs. calm fresh.
A little chop (1-2ft) gains me the same 2mph.
I only wish choppy salt water gave me 4mph over calm fresh.