I never should have doubted you guys...sorry, my most sincere apologies for my wavering belief in the power of TFP.
After a long night of feeding my pool chlorine hourly I was finally able to attain shock level for my CYA number and just about held it overnight when measured in the morning. It dropped down during the day when I got home from work...but the water, I can finally see bottom in the deep end. Dirt on the bottom, but mostly clear water...just a bit cloudy in the deep end.
Tonight I added more bleach to bounce it back up to shock level and backwashed the filter. I vacuumed all but the deepest part of the the pool and brushed the rest. Water is back up to shock level and last combined chlorine number was zero. Looks like I'm winning the battle!