First, fuse a “cheap” Dino like suchotator (where you have many dna for already). After several 10’s consecutive (like 5 or so), the probability of being more than 10+ for the next fuse is greater.
So use the next fuse for a higher rated dino. The chance that you will get more than 10 is a lot greater.
Maybe it’s the imagination, but I think that has worked for me several times already. Pure mathematics.