With attributes mostly in intellect, my bolt does like 210 damage. It has like a 1.5 second warmup giving you more than enough time to interrupt. Bash, impale, and spear all interrupt spells. If you are having problems chasing a wizard as a dragoon you are doing things wrong. I have trouble running from dragons as a wizard. I would suggest a attribute build something like 20 agility, 25 cons, 25 end, and 25 strength. To kill a wizard keep on him and focus him. Unless they are in full iron your shovel will do a lot of damage. Slow them with impale and bring them back with spear.