I have been going through terminals like crazy. Mostly cause the material was too soft and the 'nut and or bolt' would rip right through.
Then I upgraded to these ..
Best thing ever !!
Take some string and run it along the cables you want replaced. It will give you an idea of how much your going to need. Then get all the parts you need ~ wire, lugs, solder, shrink tube, cutter etc ...
A good site I found that helped me Jeep Horizons :: Homemade Quick Connect Jumper Cables
really good pics.