Just practicing some new combos other than the standard BnB ones. I either input the FTD too early or too late. I know it's not practical, I don't think I've ever seen it used in tournaments before.
I use B+2,U+3 as well, just because it looks dope and I'm sick of just doing every canned combo Aquamans normally do. He is limited as far as variations go, so there's not much you can do.
When I hit B+2,U+3, I normally follow up with a dash into B+1,2, MB FTD, 2,2,Scoop, F+2,1+3. Might be easier for you, I don't know. I'd test it if I was home.