Do you think the hardness or softness of a fly it is a significant factor in hook ups?

I guess maybe small dries ...no

but what about there rest...especially subsurface????

For example, if you use a glass bead fly vs a dubbed fly ..foam..etc.....do you think the hookups would be the same...better...worse...

Seems like even if a glass beaded one looks great ....perhaps the fish would spit it out often before you even knew it.....