Dagger Well Seam Repair Suggestions

Please see below - I have some separation at the joint between the hull and the daggerboard well (i.e., the small "lip" you see about 2" up inside the well from the bottom). This area isn't super accessible, so I was thinking of mixing up a blob of 5 minute epoxy and applying/smearing it to the lip with a stiff piece of cardboard (gravity should work in my favor). Thoughts? Last thing I want is a gushing leak when I take the old gal out for her maiden voyage.

There is a detailed post regarding this repair. http://www.hobiecat.com/community/viewtopic.php?f=13&t=22189

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H18 Newbie, Too heavy for the 14