I haven't, but then I tend to start with hot water, cuz I'm impatient. It does take longer than on a gas or regular electric element, but not a whole lot for me. I generally set the temp at about medium while I'm prepping and adjust if I need to. I only want the water to have just come to boiling when I'm ready to load...don't see any point in having it boiling until then 
CK...I'm not familiar with those...are they electric? I assume you mean she filled the "pot" (or whatever it's called) that normally is filled with oil, with water? That would be awesome! If I could, I'd way prefer to do the processing outside...keep all that extra heat and humidity out of the house. I did use the BBQ a couple times this year, but found that took forever to heat, and it was extremely difficult to keep the water temp just right. It wasn't really windy but there was enough that it affected the flame and I had to keep going out to turn it up and down.

CK...I'm not familiar with those...are they electric? I assume you mean she filled the "pot" (or whatever it's called) that normally is filled with oil, with water? That would be awesome! If I could, I'd way prefer to do the processing outside...keep all that extra heat and humidity out of the house. I did use the BBQ a couple times this year, but found that took forever to heat, and it was extremely difficult to keep the water temp just right. It wasn't really windy but there was enough that it affected the flame and I had to keep going out to turn it up and down.