Sorry to hear about your dent

Hope you have a good result with the next round of steam.
That's gonna look great when it all done. I like the Fender meets PRS theme!
What timber are you going to use for the fretboard? (you may have already said, but I'm forgetful and lazy...)
I've fixed dents in a rosewood fretboard with the damp rag and soldering iron, but I have noticed doing it twice over two days worked really well (I don't know the physics of why, but the time between did seem to make a difference)
Also, when you said "iron" did you mean a clothes iron or a soldering iron? Depending on the size of the dent, a high watt soldering iron might be more effective. I'm pretty sure it will get much hotter than a clothes iron and create more steam quicker in very concentrated area. (mine goes to 450 C)
Just thinking out loud here, if it's a large dent, maybe first goes with the clothes iron and fine tune stubborn areas with the soldering iron.
Let us know how you go.