can it be done ?

i was wondring one female could be traded from tank to tank being "layed" for lack of a better term sorry by several difrent males each fertlizing difrent clutches of eggs from the same hatch ? if so could this be bad for the hatchlings or my breeding geckos ?

The term you're looking for is being "bred" not layed ( and at that it would be spelled laid) and my guess would be no because once a female is bred she retains that sperm plug from the original breeding which fertelizes her subsequent 2-3 clutches. Also why would you even want to attempt to breed a female to several different males? You'd have no clue what the parentage would be therefore no clue what the hatchlings would be morph and het wise. Totally unethical breeding practices you're thinking of there. Don't do it.

I know the breeding "tactic" you're thinking about. People do this with Ball Pythons, breeding females to several males, because it's really hit and miss with getting the female gravid. With Balls though, no two morphs are similar enough to mistake them for each other with a trained eye. So, when the babies are born you know which male took and which didn't.

In Leopard Geckos though, breeding's pretty spot on. Mate, gravid, babies. There isn't a lot of room for "Did the or did they not?", because you'll know if they didn't because the female will obviously reject the male.

You could technically do it, but I wouldnt recommend it, based on determining the genetics of the offspring. Unless you are extremely learned on your geckos genetics and understand what each pairing could produce and how to tell them apart, I probably wouldnt attempt it.