This is the Engineered Angler's Hyper jerbait but in a much larger size. I really like the smaller version that I edit it for a larger version, aiming for Striped Bass here in the northeast. Yes, you can just simply scale it up. The problem is everything is scaled up. That's okay if you're going to scale up your hardware as well. I wanted to keep the tie on holes the same size (.100"). I've also added a front Chamber in hope that it will sit horizontally or slightly head down by adding weights to the front.

File say 6.5 but it's actually around 7 inches.

My print setting is 5 walls, 60% infill and uses Sunlu Fast PLA which give me around 98.93g. I've added a pause at lay 240 (2 hours 42m) for BBs. This layer is for the FRONT air chamber. I'm aiming for a horizontal or slightly head down presentation and a slow rising/floating. Worst case scenario, it'll sink slowly. I can try to use smaller split rings and hooks.
Volume of the lure is 159.9 g/cm3.

I've also added a 3mf file as a starting point. Feel free to adjust the infill/walls for your need or the hardware you're using.

Here's the original 4" EA jerkbait in action with a tail heavy presentation: https://youtu.be/pnl9MDewwow?si=E09raI9b5KkmdsR0&t=935