I used to keep a save, where I had created a vast dominoes of pulse and frag mines. I used to go and fire it off, or rearrange it. I saved over it by accident. Also had a save where I had dragged raider bodies and enclave bodies to the Super Duper Mart where I would have vast battles every three days. The trick was the beforehand part: where you RPP Enclave armor, weapons and ammo on the Raiders so they have a chance. Alternatively, leave lots of guns and ammo all over the place in the parking lot. Unfortunately, after about four spawns, they all go back to their starting points. Just wish that bus in the parking lot would respawn, for more fire glory
, but oh well.