So...I cant train skill in directed spell with triad until I'm level 16, and when I cast it, I only get directed spell bonus for one bolt (the only weaker bolt in RM is Shock Bolt, water bolts are being hirled about by level four). lol, this spell sucks. I would be far vetter off casting 4th level water bolt (no prep and only 4pp) which I can have an easy 12 ranks in directed spell. If spell mastery is allowed, then this spell really, REALLY sucks.
I can see the fighter snickering, "Oh, three attacks mate, but only OB skill with one? I've had two attacks at full OB since level one! Whadda loser."