|Woohoo a Laser|
It's all in rule 47.2:
No person on board shall intentionally leave, except when ill or injured, or to help a person or vessel in danger, or to swim. A person leaving the boat by accident or to swim shall be back on board before the boat continues in the race.
So no! You cannot finish, while you are not on board yourself. Very unruly.
Plus: I just reread the Fizz Cup SI. Turns out the SI (section 1.iii) specifically states that a whole lot of special SL cases such as lag and crash and more are to be considered nothing more than a gear breakdown in RL, - equalling a DNF.
More on racing rules.
PS: I found a virtual Laser Radial, as you can see on the photo. So far, I've sailed a few other single-sail boats such as the Tako, the Lil-Laser, the Shelly, the MR-Trainer, the Leetlecat and the Moth.
Check back when I test the Laser Radial and the new Q-Scow.