[Zeal]

Probably will go under the "newbie overthought" questions but I can't help but ask:

When you guys and/or manufacturers create lures, are the spaces where the swivels for the treble hooks done not only to give the swivel room to move but also to intentionally let water into the lure to help it sink, get a specific action, etc.? I only ask this because of course not all lures have those open spaces in the body and instead have screw eyes so it is all closed.

I also see in numerous "How To's" on hook hangers where you would take the extra pieces wire used for through wire construction and make loops to use as hook hangers. For this, wouldn't you have to sodder these closed in the lure body? Or you would fill that hole so the hanger won't move like a screw eye?