Todd is located in Coloma, near Sutters Mill. His dad was there too and gave us a tour of the property... Gave my son a quick history lesson about where the Chinese workers camped, (now overgrown with trees), how much they were paid, where the tailing piles are and made a point to show all the claim signs posted, haha.
Glad you were able to retrieve your Prospector, that would really suck! The BGT's can handle fast water, just need to figure out a way to secure it to the river bottom.
Did an experiment one time, ran the Mini submerged in fast water. The Mini was able to process a 5 gallon bucket faster than I could shovel it in! I may have lost some flour gold (I'm after the chunky stuff), but the clean out at the end of the day was very good.