B+M/Vekoma Flying Roll Point Advice?

When building a B+M/Vekoma Flying Coaster how do you make the roll points continue on from the previous one?

I may be missing something obvious here but what I want to know is this.
When you want to create a section like a fly to lie element, you want the track to continue at 180 degrees(on your back) before flipping over again. However every time you put a new segment of track down it switches it back to 0 degrees rather than continuing on from your previous roll point. Is there a method to continue from previous roll point, instead of having to manually put roll points in and change to 180 all the time. I find that makes it hard to create bat wing elements and reverse loops.

Any advice would be appreciated,

Click on the end of the track
Whilst it is highlighted press F3
you can then change the roll for that to 180, and it will stay like that as you place new track