Laser 2: Stepping the mast solo?

Hi Folks,

Complete newb to boat ownership/dinghy sailing.

I recently purchased a nice Laser 2 and I'm wondering if anyone has some advice on stepping the mast. Here's some questions:

1.Is it safe for the boat/trailer to stand in the boat while it is on the trailer?
2.Is it possible to dry launch the Laser 2 (pull it off the trailer on land)? Has anyone tried this?
3.Is the Laser/Laser 2 stable on its hull on the hard or am I better off just stepping the mast on the trailer? (It is...

Laser 2: Stepping the mast solo?