Scratches, Tracking, Leak

[Mr_Fixit]

Greetings all,

I am sure there have been discussions on this, but...

Scratches:
My Kayak is well loved, but it bothers me that I have managed to get it scratched up. I was thinking of ways to fix this. My current thought is: Careful application of a heat gun.. Perhaps melt the scratch down? Anyone have another good solution?

Tracking:
This is a bit of a point of frustration for me while fishing. I have to constantly adjust my rudder to maintain a fairly straight course. If I take my hand off the rudder and pedal, I tend to track off to one side or the other.

Leak:
Since I dont know what a "Normal" amount of water is in a kayak (Only been kayaking since June?), I dont know if this is normal or acceptable. At the end of a fishing trip of 4-8 hours (Average 6ish), I get about two cups of water accumulated in the bottom of my Outback. I have been unable to determine where its coming from. Is this normal? Is it a problem?