We have used dribble handoff (DHO) actions as another way to get into screen-and-roll, with another good option bringing another screener in to set up a second ballscreen action.
Here's another option...
Left, initiate DHO with a pause for an initial UCLA cut. Right, DHO ball side and Flex action on the help (weak) side. Even when the timing isn't perfect, the 3 clears through and you will still have classic Flex cutting.
The 1 is likely to get an open perimeter shot or the 5 can rescreen into another ball screen. Worst case you have 2/4 ball screen initially and 1/5 ball screen late.