can you reinforce the underside of the shower?

"John Smith" wrote in message
...
I am putting some fiberglass/epoxy on the floor of my shower (okay, it is
a
little off topic, but I could have said my boat deck...) and I want to be
sure it is not slippery. I was thinking about sprinkling some sand on it
before it is totally set. Does that make sense, or is there a better way?

Thanks.

(the shower floor flexes a little too much, and I am afraid it will crack.
I
would rather fiberglass it before it cracks than after.)