It really is cool to see...I recommend trying it if you are interested. So far we have had 3 of our females that maternally incubated last year lay again this year (the 3rd was late last night and I haven't put pics up yet). All 3 were bigger this year than they were last year, and laid more eggs this year than last. The third female actually doubled her clutch size. I know people worry about it being hard on the females, but ours really seemed to do well with it.