Damper Rod Bolt Advice

[humbucker88]

Trying to replace my fork seals, took the dust seal off and it's all rusted to fuck, so i'll need to get a new retaining clip too. Only issue I'm having is removing that sodding bolt at the bottom of the fork, some people say use a quick sharp force, others say push down on the fork to apply the most tension then try it but I've had no luck. I don't have an impact gun, any advice? Anyone tried a damper rod holder or sharp broom technique?