Plan ahead and let your team know what you're thinking. The more time they have to understand the next move, the more likely it will go well.
Leave an option to change the plan. We generally have a percentage call on how likely it is that we will do either move. But the team knows that it can always change.
Practice. Yeah, do that . . . it's important.
Have a spotter. We always designate a team member to tell us what the boats near us are doing. Often we have a "what-if" plan in place so everyone knows what we're doing based on whether the other boat is doing "X" or "Y". The spotter calls out the other boat's plan, if it can be determined, and then we know our options. This is another reason not to pull the kite clew around the headstay too early, as it tells other teams what you are doing.
Watch and learn. Take time to watch how other teams do things. That perspective can shine a light or areas of risk and show you different ways to get the job done. The more you know, the better you can be.
Relax. When you've thought things through, practiced well and communicated the plan you can execute your maneuvers with confidence.