On cruisers, I dont go for the broadside. I use Three DBB and a QTorp up front and three mean arrays and QTorp in the rear, no problems, no worries.
I agree, though fan of rear turrets myself. Compliments forward-facing DPS without a meaningful drop in overall DPS... and of course, I like the decisive power of Tricobalts (noting that the Assault Cruiser and Galaxy-X don't have a huge Tactical BOFF selection to fit in Spread or High Yield 3), but that is with the Lance able to rip shields off instantly. Assault Cruisers don't have that advantage.
90% of the time, Lance + Tricobalt in an alpha strike is all I need to silence any enemy, no matter how resilient.