[ASM & Hex✓] Finding surf offset in hex?[Emerald]

[Team Embrace]

And if anyone wants to do this for FR, I found this by first:
Looked for the hex version of checkattack 0x39 in the rom.
( I tried serching for checkattack 39 in converting it into Hex
636865636b61747461636b2030783339 (checkattack 0x39)

AND/OR

20636865636b61747461636b203339 (checkattack 39)
Found the script (surf script), and got the offset.
Made it a pointer, looked for it in the rom, then I noticed that close to it, it had a flag, the fifth gym flag, so as a test I tried to change it to the first gym flag, and it worked

I am trying to learn how to search for things in hex did the above on a clean Emerald Rom search for checkattack had zero results.

Any idea why I can't find it? The OP of the quote seems to have found it without issue.

OG by Danny0317 on p.22 of Quick R&D