On our 61 we have two red strobes, one on the top of the tail, one for'd under the belly, plus two white strobes on the sponsons, plus two landing lights and standard nav lights.
Just before getting airborne, the whole lot goes on; the landing lights get a rest when we go offshore, (there's not much traffic off our coast). They also go off after landing, because they do tend to burn out.
I would say that careful management of the LLs will ensure no burn out.