kudos to you for even knowing about flying triangles
but I don't think that is part of the routine now a days, last time I saw it was in a 1960 US AIM. And that was for IFR not VFR.
Fly the pattern and step on somebody else to request landing clearance...flash your landing light too ifyou really have lost com and look for a green light from the tower
you guys do things like that in europe don't you?