gekko

Had the battery out to do some cleaning and noticed water in the tray. I do not have the sleeve. Thought it was a fluke but nope, it keeps happening.
Got a lot of rain today and it is makin me nervous. Should there be some kind of weatherstrip along the sides of the hood? I looked at the diagrams on Delray but didn't see anything.
Would the sleeve make a difference? Is it sealed? Looks like it just sits in the groove on the tray.
Considered drilling some holes in the tray, but I don't want water pooling up on anything underneath. The underside of the car is super clean.
Thanks