CHILD LONGSHOT: It's almost a possibility
If you make the hookshot into a bottle (bombchu on II), you are able to equip that bottle to child. If you grab the longshot, then it will revert the bottle back to a longshot. Basically, the only thing stopping you from using longshot as a kid would be crossing those 2 rooms as child/adult link without hookshot. Now that we don't have isg... because fw points will go away when we travel through time.
You think we could use that OOB in water temple to swim there
edit: im gonna ba hookshot to b and then we have it