[Aussie Mike]

I find you can do a very solid job on those lugs without using a crimp tool. I made a curved anvil from scrap steel that the lug sits in and then do 2 crimps using a punch with a rounded nose. I clamp the anvil in the vice. Stip the cable and make sure it's well seated into the lug. lock the cable in with the first crimp and then finish the job with the second crimp beside it. Heat shrink over the end to keep the dirt and moisture out.

Cheers