Okay, been doing a bit of reading and came across the fact that breeding a DT to a DT is not the best idea. I have a DTgeno and a DT... Which I believe aught to give doubletails without a lot of deformities. I know I can breed him (DT) to a single tail to get genos, which can be used in further breeding, if I so decide to use his genetics.
My question is, since in my area double crowns are non-existent, more then rare, how would I achieve a decent looking CtxDT, and a better question is... How far down the line? F1, F2, etc?