Stay on target says you can rotate your dial to a manuever of the same speed then treat that manuever as red

Segnors loop is already red does that affect it ?

Ig88d says you can use hard 3 turn instead of soft 3

If dial start with left segnors loop can i still rotate to right segnors and do the hard 3 version

A maneuver that would have been red before SoT is red after SoT.

D's ability works just fine with SoT, because it applies to whatever final Segnor you execute, giving a total of 7 choices at speed 3 with SoT.