Line lock options

The button, and it's location is your decision. With my Mico I didn't have to hold the button, so it was mounted where convenient, in my case on the shifter riser.
With the new summit line lock,, I will need a switch on the shifter, because I shift fron second to third in the water. My other cars used a button on the shifter knob
(The big giant knob button is usually used with a transbrake, in my experience. )

When I do a burnout....i usually drop the trans down to one and then shift if needed and my left hand is on the wheel. I was thinking it would be easy for my idle hand on the left to hold the button verses my shift hand moving up. I'd have to play around with it to see what was more comfortable for me....I've never used a line lock before.

no transbrake going in here. more of a street machine, with some track time. The most i'll have is a line lock and a two step (only cause the two step is part of the sniper EFI)