Yes, needed to sidestep once up on the roof... it was the only place on the back of the TC that they could place it due to the floor plan layout, not too bad once one gets used to it.
I did use Etrna bond for the actual roof repair. I needed to peel it back about 10 inches to expose and work the roof framing and then laid it back down with the EB on top and all around.
I did not want to EB over the new skylight flange since the first attempt (on the old bubble did not stick.) Also- did not want anything over the new, except for Dicor, so that if the skylight ever needed future replacement then it would be easier to only remove sealant for any new bubble install.
BTW- there is a strip of butyl between the new EB on top of the roof and under the skylight flange with the sealant over it all including new SS fasteners.