I received a copy of a video that teaches you to walk your dog on a loose leash in less than 10 minutes. Shockingly enough, it's not full of BS. I watched it, and then went out and bought Inara a properly-fitting prong (the lady at the store before had me get her a huge one - I didn't know better). I practiced the techniques in the video which are essentially to turn and run the other way every time she pulls or stops paying attention to me. I had tried this technique before, but now that I have a properly-fitting prong, and have actually seen it done (I learn by watching), it's working. Inara walks like a dream if her prong is on and I whip around a couple times. I'm sure as I keep practicing she'll get even better. It broke my heart doing it though 'cause she actually yelped a few times. I've NEVER made my puppy-girl yelp.

But the guy who does the video says they're not actually in pain, it's just their way of acknowledging that they've received a good correction.
Anyway, here's my question (it always takes me so long!): Inara's neck was red yesterday evening on the bottom. It's fine again today, but it looked sensitive last night. Is it just showing up more obviously because she's white? Or do I need to lessen my corrections? I don't feel like I'm being cruel.

Or should I just go out and get those rubber tips that cover the prong? What do you all think?
And just so you know, the website is
http://www.dogproblems.com , and the trainer's name is Adam Katz. Looking at his website, it's one of those I'd always scoff at because it seems too good to be true. But damn, it actually has really good info once you download the book or join!
As always, thanks for any answers/feedback to my questions!!!