I think I am actually experiencing less cratering with a thinner icing consistency flooded on fairly thickly and then dried under a fan. I just did that with some icing I needed to get rid of and some extra cookies. I took very little care with the piping and flooding (used the same consistency for both, just let the piping wait a few seconds and then I flooded). Not a crater in the bunch. Normally, my icing is a bit thicker. Maybe it's a fluke. Interested in seeing other responses to this. I usually have several craters amongst a set. No rhyme or reason for the difference.