Interesting to here many opinions, but rules are rules and if I see anyone violate any rule I will inform them of the regulation and depending on their responce, I may phone the CO hotline.
Having said that, if enough people disagree with a reg, then lobby to have it changed. I mostly flyfish from a tube or a boat and mostly fish two different types of line at once, however I must admit, I've never really understood why I am permitted to do so simply because I'm in a watercraft. As far as making all things equal is concerned, I would much rather see everyone fish with one line only than make it legal to fish two lines from shore. Shorecasters are already making it very difficult to troll along the drop off as it is,many of them can cast half way across the smaller lakes so allowing them to double up on that is not the best senario. As far as fishing two lines from a boat making it easier to cover more of the water column,is it really that much of a problem if it takes a bit longer to key into fish?