Tournament is in two weeks! How soon should I stop prefishing??

I'll fish all the way up to the tournament... Just try not to catch the fish, cut the point of your trebles or something.

If possible, I prefer to pre-fish it twice under different conditions. The closer to the date of the tourney, the better. I do more searching with my electronics than actual fishing. I'll attempt to locate at least three spots with decent numbers and check those areas again on a subsequent outing to see if the area still holds fish.

If it's a small body of water and I have concerns that others may sit on those spots, I'll look for subtle spots close by that the fish my retreat to if pressured. If it's a big lake, I'll do my homework with a topo map marking spots similar to the ones I physically checked out While on the the water.

I don't like to actually fish for any length of time, just enough to confirm the fish I'd marked are indeed bass and decent size. My reasoning is that I don't want to have too many preconceived ideas about what will actually put fish in the live well on tournament day.

My specific clubs require that you fish no closer than 1 week prior to the event - I usually just operate by that rule period out of habit now. 

I've prefished up until the day before. Although I don't recommend it, if you have no other option I wouldn't be against it.