Ok...don´t want to get accused of snorcle envy :11:
I do have one...somewhere...I bought it on sale right after I failed to find my old one...I cant really remember what colour it is but I´m pretty sure it had some day-glo orange stuff...does that qualify :06:
Just asking a rototiller to look behind them on a dive is usually enough (in my experience). If you add the "look at me, this frogkick-thing will make sure THAT doesen´t happen"-signs, then the problem is usually solved...taking 5 mins out of a dive to get it right is acceptable to me...if that doesen´t work I make sure I lead the dive (my viz wont be ruined), talk about it on the surface and if that doesen´t help then I´ll dive with someone else the next dive...
For hoovers there is no easy fix (that I know of). I´ll either accept a shorter dive (if I know beforehand) or politely ask them to buddy up with someone with a more similar airconsumption...
I too hate having quality viz ruined (though 80ft is almost unheard of here)...my experience has been that most people on "quality dives" have good finetiquette (like that word btw...finetiquette)...maybe it´s a regional thing or just pure luck...