Welcome to the world of sensual massage, Sass!
1. In the beginning, I send them to take a shower, they come back and are naked.
Hop on the table.
2. I usually drape a light cloth on them, I actually don't know why I'm doing this but I'm kind of trapped in a set of mindless routines at this point. I get rid of the cloth as the session progresses.
3. Good point re pre-cum, Sass.
A bit radical solution, but I stay in large lycra granny panties. It's a shield from body fluids and unwanted intimate intrusions.
It's a boundary. A chastity belt. It also holds the wobbly bits together.
And a side note - use Dri Pak laundry soda to get rid of the oil. xx
Feel free to PM me for the links to granny panties and a cloth.