Crack in kayak

[J3FFro]

Hi all,

Last saturday, I was prepping my kayak for Sunday's venture and I noticed a small crack (2inches) near the middle hatch lid. My kayak is a Malibu X factor (stone color). I apply goop on the inside/outside and so far it looks like it's holding up. I'm wondering if anyone have experience in repairing these types of small cracks, should I be worry? Is goop good enough?

I'll snap a picture when I get a chance to give you guys a more visual.

Thanks