Not only the lip angle and size presets the diving depth of a lure , but also the buoancy of the lure's body . To give you an example , .......I once swapped a lure 5 1/2" blank from balsa , wanted it to dig quite deep , so I mounted a larger triangular lip pointing about 30° forward .
The lure swam fine , but dug down not more than 3 feet this way , .......popped back up like a cork , if you would stop the retrieve .
After I put loads of lead into belly and also back it still floated back to the surface on a pause , but much , much slower , ..........it now went down for at least 12 feet or even a tad more , .....still wobbling along seductively .
You can't plan on a crankbait's action on only one of it's features alone , ....they all must match one another , and if you alter just one , you'd get a different result in entire swimming action time after time .
Good luck , diemai