I sent Farf a PM a couple weeks ago, but I haven't got any response
Backing up - competing theories are:
1. money arrived from close by ~ Cooper landed close by ~ requires amending flightpath ~ Robert99
2. money washed in from further away ~ FBI FP time of drop amended Cooper lands closer to Columbia ~ Georger ?
3. other wash-in theory ~ source construction Hayden or Govt Island ~ Farflung ~ Maj. Dawson ?
4. dredging theory ~ money deposited on Tena Bar in 1974 ~weathers out to be discovered in 1980 ~ Shutter ?
5. plant ~ Kaye ?
Minor theories:
1. Washougal washdown ~ not supported by flight path parameters (R99 etal) - Himmelsbach & Thomas
2. Weber wash in ~ Duane tossed bag of money into river at Red Lyon Inn washed up on Tena Bar.
3. Weber plant ~ Tina Mucklow planted money on Tena Bar because Tina = Tena. Tina was under Duane's spell!
4. Blevins plant ~ KC and/or Geestman planted "3 bundolas" (money offered Tina) on Tena Bar. Proof by Motives!
5. Ice theory - proposed by an FBI agent - money arrived encased in ice from somewhere. An elegant theory but Temp records don't seem to support an 'ice' theory ? Amazon says not likely.