Keeping the laser on?

[Shibbyland]

Firing the hellfire from gunner position with AI pilot.

I lase the target with right hand first detent then while holding the laser on I fire. That's all fine except I use my HAT switch to direct the TAD and that doesn't work while I'm using the assigned button to continue lasing. The AI pilot drifts a little meaning I have to constantly let go of the laser button to move the TAD then lase again.

Is there a way of toggling the laser on so I don't have to hold down the button?

[Mud]

I have it bound to my boat switch on the HOTAS Warthog so I don't have to keep pressing a button.
So I guess any switch you may have on yours should work.