While I am not a hop-head, I do think it has been a stupid law and fruitless effort. People who want weed are going to get it. People are going to sell it as long as there is a market for it. So far, it's slimballs, crooks, and narco-terrorists who benifit.
Taking it out of their market and undercutting the price after legalization would put part (a relatively small part) of that mafia out of business.
Tax it. Control it. Make people apply for a card (like a movie rental card) to buy it.
Just make sure if it get's into the hands of kids that it carries the same fine as buying booze for kids.
No convicted felons should be able to buy it.
ROX