Good for you. I had to show my own family doctor how to fill mine when I needed an emergency defill and she said "you shoudl be doing your own you know more than me" I haven't tried yet but I can get the needles and saline from work and my port is very very easy to find and close to the surface. My family doctor doesn't want to do it unless its an emergency and my fill clinic is 6 hours away so I may try it, if only so I can defill myself in an emergency if I need to.
I can find a vein in a leg on a moving dog, I am pretty sure I can find a port that 1" across and fully palpalble....