Two dries for me guys, catch plenty 'Rod Benders' and i believe the advantages outweight the disadvantages. Like everything else you need to learn how to do it properly.
Yes i've had breakages but these are mostly down to fish teeth rather than the fact i'm fishing a dropper. Yes Maxima green 3lb gives you a lot of strength and yes on some 'spooky' fish i will drop down to pre-stretched and one fly (or when on 'flat water').
Not a Dr so no preconceptions here.
In the end, like all other methods we use, if you don't like it then don't use it, but don't lambast someone else who does / can.
BTW i always fish two dries on lochs, again a learned method but very, very effective, there's one or two on here who've watched me in action doing this and can vouch for the devastating effectivness when conditions suit (can't underestimate this though
).
In the end i like fishing two dries because it offers so much more versatility and i really enjoy it, can't say any more than that. (Iain it was two 'dries', ginked up static Hogs to be precise, i was using on a water near Inverness last year, seemed to work ok there eh?)