These are my personal thoughts.
Everytime i walk down the main road of Cabarete i am bothered continuously by people selling all manner of crap and sh!tty art. If i am thinking about something, which is often, i can now guarantee that someone will go out of their way to REPEATEDLY try to get my attention disturbing my thoughts. I ignore them and continue to mind my own business, but then they position themselves directly in my path, and there is often very little space for me to politely walk around them.
I find it interesting that your user name is "nice guy". You are anything but!
These people are trying to make an honest living. If you are not interested, politely tell them so. I have been in Cabarete many times. Sometimes I buy, sometimes I don't. I never try to belittle these people, and I am never rude. Perhaps you should try that.
That is just silly. You can try to make an "honest living" without being a disrespectful ass. If I am sitting on a beach having a conversation and a vendor comes up and interrupts me, no way I but a thing. If the guy waits a few seconds and then smiles before giving his sales pitch, he has a shot if I am in the buying mood or need what he is selling.
Years ago on the malecon I showed up with an ex and only had 500 peso bills on me back when it was tough to get change for a 500 peso bill. I would say at least a dozen flower vendors stopped by to harras/sell me flowers. I pretty much will always spring for the 2 or 3 bucks for roses for whatever females may be with me that evening. . .because . . . .I have that kind of cash;-)
That night an old woman, stopped and waited for a break in our conversation and asked if I wanted to buy roses. She didn't do the trick of putting the roses in the girls hand so you have to say yes etc. I politely said "mas tarde, no tengo cambio". She smiled and said "gracias".
After a few beers we paid the bill and I walked that parking lot for 20 minutes looking for that woman so I could buy 3 bunches of flowers.
Reward good behavior and not bad behavior. Rewarding annoying touts and vendors only brings you more annoying and disrespectful touts and vendors. . . . . .