I've been looking around google and other various places, but can't seem to find any documents or info about GBA pointers. I was just wondering if anyone knows any information or any docs that could help.

Thanks 

Yeah.. but what about things like re-pointing text? Would it be the same as GB?

Yeah, repointing text is easy. No fancy bank math required. All you have to do is add the GBA's memory offset for ROM (again, $8000000), which generally means you just have to take the ROM address, pad it with zeros until you have six digits, then slap an "08" at the beginning. If the ROM address is $8417, then the GBA address is $08008417. If it's $245938, then it's $08245938. $42, $08000042. And so on. But like KingMike said, GBA pointers are little-endian, so the bytes are stored in reverse order: that second example would be stored as $38592408, for instance.

This is, however, all assuming that pointers are 32-bit. If they're 16-bit, then you have only the 16-bit address space from the start of the text to work with, which either means you cut your script to fit, or learn ASM to either implement compression or make the game read 32-bit pointers.

Stored in normal order (lower bytes = lower addresses etc.), displayed in our human reverse-order format.
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If the most significant byte is always 08 wouldn't that mean GBA games are limited to 16 megabytes? I could have sworn that there were GBA games larger than that.