[allenphoon]

well, this is what i think
if you cut the drosera into more pieces with small length, it means that the nutrient that will be the first source of energy supply will be less, even though you may got a lot of plant at last, but they will grow much slower if compare to the cutting that have wider length. Unless you are trying on long leaf drosera, cutting them into more pieces seems to save more place and produce more plant, if you trying this on drosera adelae, you dont have to do anything to make it to make more plantlet, just let them lay on the sphagnum moss and a 5cm leaf can produce at least 10+ plantlet(this what i got through the leaf cutting)

But every people method works different, so the best way to find a successful cutting method is to try and error and find out yourself!!! Hope you will can find it!!