Breaking this up into a few groups first since I'm sure it will get the most interest is the Drag I "designed/invented" no patent pending feel free to replicate it hope it helps. It does flex more than I like and I plan on making it stronger using square stock and some gussets and making it out of aluminum and adding an area where I can add weight to it.
The Drag
The Drag being set
The drag after it's first pull
The drag after riding it to get some weight on it, G/F drove the truck
(Note: Not recommended for the faint of heart or those who are prone to injury...it was kind of dangerous.)
I'll post more later or maybe tomorrow my foods burning
