In 2 wks I have back to back beach shoots of a couple of related families. 3pm - 6pm I'm a little worried about 3pm-4pm because I feel like it might be too sunny. What does everyone do in this case? Should a use a 3x4 reflector to block or defuse the sun? I also have a shoot through umbrella? Suggestions please, as I keep my fingers crossed for a overcast!