still a good thing to do apart from the previous mentioned cons ?
first get your eggs.Dig them up as soon as you can after laying.if you do this you don`t have to be too worried
about the eggs position .A late discovered nest that has started to develop you would have to be really careful to keep the eggs in the same position as you find them.Get an icecream container,click clack etc and put s few inches of pre moistened vermiculite.Get the weight of the vermiculite and add the same weight of cooled boiled water,mix it well so the moisture is evenly distributed through the medium.add the eggs in rows so they are half in half out,all you have to do is make small depression and put them in it.it should be damp enough that you can squeeze it together in a clump but not squeeze excess water out?Cover your eggs with a damp handee towel etc and put the lid on.put them in your incubatorCheck weekly,if the paper has dried out,re wet it ,if still damp leave it.if it seems to dry out lot you cn dd a smll open container of water,jam jar etc,nothing with too much surface area.Any sign of mould change the paper for fresh one.Temps between 26-30c google will give you more precise temps for sex determination.good luck,you can`t beat the buzz you get when you see the first little head poking out.