I would personally never spread a bole. It's basically your only access to the enhance effect. Spear and and bole are pretty much RR fodder for me, though I will occasionally use spear for pre-pull dps CD, or before i use LA + CO or synastry, because god I love synastry. I also like giving spear to SMN and SCH when I notice they dont have aether stacks or have only 1 stack. I would certainly NEVER expand a bole, it's just not worth it at all.