either buy one of those portable little hot tip tools like mentioned in the previous two posts for about 20 bucks, or go to walmart and get a woodburner from the craft section for 8 bucks.
the advantage of the portable one is..well...its portable, but its expensive and the wire tip will eventually burn out.
the advantage of the wood burner is its cheap, it will last, but you can not take it out on the boat or shore with you.