breeding from clones

hi ive got 3 strains (clones only no seeds) that i want to combine into 1 what is the best way to cross them i know there will be a huge amount of pheno's to choose from.

obviously there are some traits from each one that i want to combine into the 1 plant.

anyone?

Without being able to produce pollen from a male, i'm not really sure how else you can breed!?!?!?

ill be stressing a clone to produce pollen.

it wont be as simple as combining 3 to make one real good one..that may take years to achive. yes you will end up with alota variations