Pull out the wing seats....fill tubes with water....wait overnight and see if water level drops....I used a small fan to blow air into the hulls at the access port and witness small air bubbles in the wing tube. When I went to repair, I simply flips over that small fan as to exhaust air from the hulls and watched the repair resin get sucked into a small hole. Wow....problem fixed.
Also look closely at the dagger board wells...sometimes a small rock might have punctured a hole within the well near the bottom.
Another area of leaks is most likely at the access ports. Slightly pressurize the hulls and use some soapy water...look for bubbles. I have replaced my access ports many times over the 31 years I owned my boat.
I now use the hinged twist-n-seal access ports....no loosing the lids.
You will need to increase the hole size by about 3/16" and build up the deck profile to match the footprint on the twist-n-seal ports. These new ports do slightly leak but not very much. 100% better that the original access ports.