Thanks Mysticeagle.

I think I maybe read in one of the threads on the snowmachine that it could be pointed at a material group...?

If so I could maybe point it at a "crest" material group... if I made one in the wake obj in Hexagon. As far as I understand it so far, I can make the material groups for my obj in Hexagon... I've not actually tried this yet.

If not, then I guess it would be a case of making the wake in two parts... a prop for the crest and a prop for the wave body... and I could hide any props / figures not needing snowed on, as you suggest too.

The two part prop might be good for scaling parts separately too...

Don't know much about modelling props or anything about making morphs in them, for use in Poser, as yet.

I've done a fair bit of practice modelling though now, in Shade3d and then Hexagon, after getting it as a freebie.

I will play around I guess and see if anything sticks ;-)