Answer 1

Yes you can sketch HM moves like fly but if you want to sketch fly you have to sketch it whilst the opponent lands. You can then use fly outside of a battle along with all the other TM's.
Hope this helps! :)

Comments

wow :) hahaha

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Wouldn't that allow for a sequence break? I mean, like, if your friend traded you a Smeargle before you got Fly.

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@poke'slash Not really because you need a gym badge to use a move OUTSIDE battle, but you can use the move before finding the actual hm, what can cause a sequence break.(You could also just trade a pokemon with the hm learned already)

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Oh. OK.