"Spider cracks"

[cliffpaul2]

I'd like some advice on repairing spider cracks. I'm only assuming that is the right term for what I have on the surface of the gel coat. Please take a look at the last picture in my gallery (mine is the latest one that was posted and is on page 4). I took a close up picture of the problem. I got some gelcoat and I'm ready to go to work on some of the larger cracks, but...

Thanks in advance,
Cliff