Let's remember the Twin pilot was NOT in landing configuration. He crashed flaps up and gear up at 200mph. We need to be predictable in the pattern, and a missile coming through in cruise configuration is not a common occurrence on our field.
The investigation showed this knuckle-headed twin pilot landed at our airport monthly and would never enter the pattern. If the patter was full, he would break overhead and make right traffic over near the jump zone (as the pictures above shows) and reenter for another direct to final. This is a left traffic pattern runway.
The twin pilot was a ticking time bomb who should have been stopped earlier.
What amazes me is that the twin pilot was only one mile out without having the base-leg traffic in sight, and did not begin his go-around right then and there. It also amazes me that the base-leg aircraft continued across the final-approach course after hearing that the twin pilot was only one mile out without having him in sight. No matter who has the right of way (or THINKS they do), in the interest of putting survival above being right, both pilots should have taken evasive action at that point.