I have a piece of 8" pvc we could use to flesh a hide on.
I think 8" pvc would be great for fleshing.  I've used 4" pvc in the past.  It works well but you've got to move the hide a lot because of the narrow work surface.  I have 12" pvc pipe 3 foot long; it weighs about 30 pounds.  Actually, I have 4 of them.  Three are being used as deer feeders. 
The trick is figuring out how to mount the pipes on a frame so you can create a work station.  I have one with 4" pvc built.  I'm not sure of it's condition.  I haven't used it in about 7 years.  I'll try to get out today, brush the snow off it and take some pictures.  I've been thinking that I need to redesign a fleshing bench. 
There seems to a 100 different ways to tan a hide; from the chemical Tandy Leather kit, Tannery in a Box, to egg tanning to brain tanning to using tannin from tree bark.  I've done the Tannery in a Box most of the time.  But, I did an egg tanning on the last set of deer hides.  It worked pretty well, but I still need to smoke them and work them out more.  All in all, I have 8 to 10 deer hides in various stages of completion.  haha
Do we want to do a hide tanning clinic this Gathering?  I am far from being an expert, but we can give it a go if there's interest.  I bet Bill has some tanning experience, also, and maybe Joe??