There are a few reasons I didn't pursue that — one of them that comes to mind because of having to deal with repeats - for example, let's say in round 1 you have TRIAL and in round 2 you have TRAIL. You see TR---, guess TRAIL in round one and the game marks it correct. In round 2, you see TR--- and guess TRAIL again.
I think that solution lock you experience - it's a little uncomfortable, but once you learn to wriggle your way out of it, you get that "aha" feeling I'm going for.