X2 I like to use the local tech school, takes a while some times but they usualy come out looking good! I know people who have had their trucks painted there, it took a few months but came out good and didnt cost much.high school shop class,get to know the teacher
nate you should try these ideas on your truck sorry just had topullers are usually used in cases like rear quarter panels where you cant get behind them with a spoon. and any excess heat you put to the metal will only make it more maluable wich is good for forming the dent out of it but bad in that it will be that much easyer to redent the same spot.
But in your case lane the fender is really really accessible from both sides. Kina once told me about a small leaf spring from the bottom of a pack being a really good make shift spoon. I would suggest you pm Kina and get him to give you a couple body tips. (If i remember correctly he use to do it for a living)
Also being that the fender your working on is not that large, you might consider getting a sand bag to set the fender on and pound out the dent from the back. This lets you stretch the metal in a more controllable manner if im not mistaken.