Stripping is done as it will increase your yield of fry, and mainly done by those who wish to sell large amounts or those that have females that won't hold full term.
There are several methods to stripping a female, including one which uses a turkey baster.
The best and most natural thing IMO
is to separate the holding female to a seperate tank and let her do her job, although she may not hold full term first time, it is learned. If you strip they may never hold full term on their own.