Originally Posted by Bambi
VT + CT girl = combvails F1 Maybe a couple combtail deltas?
F1 female + ct male =some better combtails,more web reduction,looks more like ct F2a
F1 male + F1 female = more web reduction and dragon F2b
Take a fry F2a and F2b and breed them.
Full disclaimer: I am totally new to betta breeding. (I do know a little about genetics and plant breeding). I may get myself into trouble by offering this suggestion, but I am more than happy to be corrected by the more experienced people here.
I also understand the feeling of figuring out a problem and solving it myself, maybe you are feeling that way too.
I don't know if dragon characteristics are dominant or recessive, but we do know that the veil tail trait is hard to get rid of.
Also, some breeders have observed spawns can take on more characteristics from the female parent.
With all that in mind, I would suggest:
Cross you crown tail femaile to the dragon male.
Select a male from the spawn and cross it back to its mother. I know that sounds kind of gross, but we are not talking about humans here. You will be concentrating the genes that lead to the crown tail trait. With plants, this is done all the time.
From there, I would see what you have, and re-evaluate your strategy, concentrating on the two traits that you are selecting for.