Roadrunner: looks like one of your images didn't show...
I posted two pictures showing different tow positions relative to wakes. They're both on my copy.
Any experience towing a 'yak with a power boat?
No, never have towed a kayak with a power boat. I have been towed on several occasions though in small sailboats by motor launches at sea, both singly and in "boat trains" under a variety of weather conditions, and am generally familiar with the process.
My previous commentary was primarily motivated by turnerm's reference to using his kayak to tow his kids. And although I haven't towed kayaks from a power boat, I've towed many power boats from a kayak, as well as kayaks, sailboats, rowboats, canoes, buoys -- just about anything that floats. I've towed in bays, lakes and rivers in a variety of weather and wind conditions. Obviously Mirage Drives make fairly capable tugs for rescue as well as transport. Here are a few examples:
Hopefully this may be useful to those of you who tow with power in addition to those who tow from their kayaks.