[Pausing awkwardly, Hiccup gives the guy a long, unsure look, then glances down at the ice under his feet.]

I think that'd be more work than it's worth. [Seriously, breaking up the ice just so he can walk without fear of slipping is totally unnecessary. What would he even use, anyway? His big walking stick? Pfft.]

Really, I can handle it. [To prove it, he takes a step forward. ...And his prosthetic foot nearly slips out from under him, but he manages to keep his balance.] I'm-- I'm a lot better at this than I seem, I promise. I've dealt with ice before. A lot.

[Apparently he just sucks at it in front of strangers who are watching him to make sure he doesn't nearly break his face again.]