I am sure that the official stance on towing would be to disconnect the belt from the wheel before doing so.
That being said, I have seen videos of people towing Nissan Leafs to recharge a dead battery pack, no reason
that it wouldn't work for the Zero. I have noticed that if I am riding, and, roll off the throttle, at a high enough
speed to maintain regen, if I turn the handlebar switch to off, it still has regen. If KEY is turned to off, regen
seems to go away.
Lots of posts about windscreens already on here, so, will defer to them.
There are a few threads about LED headlights on here, they seem to work well.
On off switch for headlight shouldn't affect the warranty, unless it can be traced as the cause of a warranty issue.
As stated, there does seem to be a "limp" mode. I am usually going fairly slow if that low on power, so, have
never experienced it. If already going slow and you run out of power, in MY experience, the bike stops. I have
not tried it with my Zero, but, with other electric vehicles I have owned, if everything is turned off for a short
period of time, you can SOMETIMES get a few more yards out of it. Unfortunately, in stock tune, you would have
to get it up to over 10 miles to get any regen to occur. Okay if it stops at the top of a hill, but, otherwise,
look for an outlet.
Welcome to the world of EVs.
Enjoy your rides.