Blast Cannon vs Grenade Launcher?

Grenade Launcher can do much damage per hit than the blast cannon.
Blast Cannon is a little faster and has much more range.
Blast Cannon works great in the granage launcher range and missing it is not a chance.
Granade launcher has a radius of 2, and may deal damage equal to a blast cannon if the enemy moves to the side of this small mortar.

For two weapons having one slot points for an MK4/MK5 shooter, what setup do you use?
Sniper Cannon + Blast Cannon
Cannon + Blast Cannon
Cannon + Sniper Cannon
Blast Cannon + Grenade Launcher?

 

I'm curious about this myself. I have a rare cannon that I love, and I switch between using blast cannon and grenade launcher as my secondary weapon (I have an MK4 Enforcer). Biggest difference I see is that there is time for someone to dodge the grenade, but y'know the old sayin "almost only counts in horseshoes and hand grenades." But blast cannon can be difficult to hit with at longer range. I will soon get my MK5 boat, and I plan on going cannon, blast cannon, and grenade launcher. Could be big damage under some circumstances without a lot of cooldown.

 

It's "Almost only counts with horseshoes, atom bombs and hand grenades" if i remember correctly

 

Also you should pop a flare gun on that enforcer at some point

 

Def flare gun plus blast cannon is the best
If you want more dps then i would say use cannon plus blast cannon
If you like attacking from a distance then sniper plus cannon