any quick fixes?

when does it leak? just sitting? driving in rain, etc?

my first thought might be checking the spoiler (if equipped), you also may want to get in the trunk with a flashlight and have someone hose down everything including the back glass, until something shows up.

noticed it after a long trip (Florida to NJ) and it had rained almost the whole trip, other than that i've never noticed the leak. No spoiler so i'm thinking it the weather strip