I cant say I have this issue. HAHA. I work as a RV "Sales man"
If I can answer any question I will be happy to help.
Solving the questions: First guy you see when you come in the door? This is a way of keeping it stress free. No one likes a bunch of sales people standing around the door when they arrive at a dealer. So they rotate salesmen at the door to keep it low stress.
If you don't like a salesmen the best thing you can do is return on his/ her off day and buy from someone else, you can also ask to speak with a sales manager or just ask for a different sales person. I myself don't work for a 2 teeth sales organization, but I do know the kind. I avoid working there.
For getting a good deal? that can be simple. There are dealers that mark it down and leave a few hundred dollars to play with and some that only show full top retail. This is when you need a sales person you can trust and know. Every persons story is different on buying. I don't want to open the can of worms on why every deal is different, but I will always help where I can.