stubby wrote:I always just figured grappling hooks were one of the things you can load into a Launcher. Unfortunately this means that a regular minifig-carried launcher (max WS 1", so max PS" 0) wouldn't be strong enough to pull (reverse Launch) the minifig up by itself, so he'd mostly be climbing the rope under his own power. That's all fine, most grappling hooks work that way in real life in any case.
In order to do the Batman-style thing, that's where we need the custom rules, since the Launcher would have to be size 2" to be strong enough to pull the minifig up. I'd definitely force the grapple launch and the rope retraction to be on separate turns though, to give enemies the chance to mess with it.
[quote="2010 Rulebook]A Launcher can fire a group of one or more Explosives with a combined Explosive Size up to the Launcher's own Weapon Size, or a group of one or more regular objects up to one half the Weapon Size, rounded down (this means that a Size 1 Launcher is limited to either Size 1 Explosives or Size 0 objects like minifig equipment or Vermin).[/quote]
To keep it simple, I would say that a minifig grappling hook (representing something like a Bat-zipline-gadget) would be a Size-0 piece of minifig equipment.