Well, its a big ocean, get too spunky and you miss the raid entirely, its a tough task to do CAP with no radar.
Actually 1/2 the F4F CAP was engaged with Zeros at C35, with C31 being the NE pos carrier, which is the one your group attacked. I was heading there from C35 when the first wave came in. We really had no good indication as to which CV was going to be hit, despite several sightings of inbound raiders. I didnt think the IJN flight leader was going to be too obvious on the route, and they weren't.
In any case, its not much of a contest, D3A vs F4F, its a tall order to attack a CV and rtb without getting nailed by aaa or fighters.
Salute to all the IJN Dive Bombers, you guys did a good job.