We didn't play with all the details in the rules (counting points, etc). We just started with a trial run (not using a timer, which meant it ended up going on for too long), then three timed rounds (stopping a round at five minutes is a much better system)--and we each won one! Although before the end, we discovered that Finn had cheated when he won. (There are a few blank tiles that can be used as any letter, and we thought he had drawn one of these, when in reality he had just turned a lettered tile back-to-front so that it looked blank and fit with the word he wanted to make.) But really--not that I want to encourage my son to be a cheater--I think that made the game more memorable. And it was quite a (slyly) clever idea!
I would not mind Dabbling on a semi-regular basis.