hi Paul
i used to have a 235 and i had a similar leak which i eventually traced to a screw hole helping to bind the hull to deck [ at level of gunnel ]
it was in the rear cabin and hidden by side carpeting.
water was oozing from a missing screw......had to peel carpet back to reveal source of water.
Bill Parker supplied materials to mend but this was a simple epoxy and glass fibre job once located.
so check the screws along the line of the gunnel [ approx] just in case
another possibility are the shroud plates. again a simple repair
unscrew plates on the deck and reseal with marine sealant
good luck
charles
charles clements
Spartacus 285