riding deep pow is an acquired skill, renting a pow board will make the day easier and more enjoyable.
its not as simple as does it float or sink. its about making it through the day vs having lots of fun.
I'll focus on the last part
If we are going to Snowbasin is it best to look for rental there or in SLC?
Would I be expecting Burton Fish as only option or do they usually have more selection?
-- Better to have tried and failed and not tried at all --