SASless may have lots of twin time, but apparently none in Part 135 ops. I used to fly a 206B in a field where 100 takeoffs was a light day. When I flew that field, I didn't even have time to write passenger names, or takeoff or landing times - I just made a mark to count the landing, and the customer was charged 2 minutes per flight, unless the flight was out of the field, in which case the normal manifest requirements applied. It simply wouldn't have been possible with a twin, because the regulations require computing weight and balance for every flight. That would have taken longer than most of the flights. There is more to flying a twin than just increasing the throttles, at least for commercial operations.