Your options are:
Picton harbour- great ramp, busy on weekends, sheltered but long run to adolphus reach.
Glenora ferry- good ramp, rough to do in west or north wind. Nowhere to tie boat up to, must have someone with you to dunk the boat.
Adolphustown park: very shallow, usually no dock by fall but smaller boats can use it. Need waders or tall rubber boots.
Finkles park: good ramp, ok parking, little to no dock to use. Not fun to use in strong east or north east wind.
Bob M
https://kingstonsportfishing.ca/IG: @kingstonsportfishing
FB: Kingston Sport Fishing