You might have to take off the lower side plastic so the welder can get to where it needs welding, make sure you tell who ever is welding to be careful and not melt any wires under the fairing, i brought a roll of tinfoil with me to cover wires be he did not use it and i was worried while watching him being close to some wires but it turned out ok.
you probably know this already but you will have to remove the gas tank before he can weld and make sure you clean up any spilled gas that will happen when you remove the fuel hose.
NOTE: if its welded like i had mine done then you wont be able to remove the fairing without cutting threw the weld, in order to do a good job he had to weld the nuts around the fairing mainstay. but i don't ever intend to remove it anyway, the middle nut and bolt was still there but part of the mainstay brace was cracking, it was only a matter of one more good bump and i would have been eating the pavement after running over the entire fairing. i don't want my fairing falling off in front of me at 70mph.