Ar234s and JU- 88s are my primary selection for CV destruction.
As stated above, do not bother climbing any higher than 10k.
Anywhere from 8 - 10k is an effective height. (You want to be just high enough to avoid CV ack, the lower the better really)
I usually use the RATO units on take off and therefore do not have them on-board when I drop.
Also as stated above, calibrate from further out… use your e6b to make sure that your calibrated drop speed and TAS is the same.
As for actual CV hitting technique… I usually drop 1 to 1.5 carrier lengths in-front of the carrier with salvo set to 3 in order to hit the CV.
This is roughly 2 – 3 centimetres on my screen (this needs to increase as altitude increases and this is why ‘the lower the better’ (provided you’re above ack) as you need less lead on your bombs)
I believe it was RussHeim who put me onto this method and I have had something like a 80 – 90% hit-rate on CVs while using this method. I rarely bother with CVs, but this method does work for me most of the time.
This should provide you with an effective method for level-bombing CVs in 234s.
Turning CVs shouldn't prove too tricky at the 8k level, you just need to be good at guessing the path it will take and simply adjust your bomb 'lead' accordingly. With the CV slowing right down in tight turns, you really won't need to lead your bombs too much at all (1cm perhaps).
Good luck and let me know how you go with it, Emu