Oh man, congrats on the 2023! I’ve been driving Tahoes for over a decade now and that 'black hole' feeling is seriously real once the kids start piling their gear in. For your situation, I would suggest focusing on the sliding issue first because that’s what’ll drive you crazy on a 10-hour trip. In my experience, the WeatherTech Cargo Liner for 2023 Chevrolet Tahoe is a total lifesaver for the muddy cleats. I’ve had mine through three different SUVs and it basically looks new after a quick hose down. But to keep stuff from sliding around, I actually prefer the Husky Liners Weatherbeater Cargo Liner because the material feels a bit more 'tacky' so bags don't go flying every time you hit a corner. For that narrow space behind the third row, you gotta get the GM Genuine Accessories 84242270 Vertical Cargo Net. It’s an envelope style net that hooks in and keeps your groceries from tumbling out the back when you open the liftgate. Also, since you mentioned seat-back protection, the Canvasback Custom Cargo Liner for Chevrolet Tahoe is highkey the best option. It’s a fabric-based protector that sticks to the back of the seats, so you can fold them up or down without ever removing it. It makes life sooo much easier when youre switching between passengers and gear. Tbh, it's probably the most useful thing I've bought for my truck. Gl with the road trip!

Quick question: are your seats power-folding? I once jammed a motor when gear slid! - Try the Starling's Car Trunk Organizer Actually anchor it to the D-rings; it's sooo AMAZING!

Respectfully, I'd consider another option because those 'official' accessories can honestly be a massive money pit for what they are... I've been researching the specs and found that a modular setup is wayyy more efficient for the Tahoe's 123.1 cubic feet of max cargo volume! 1. **Industrial Crates vs. Soft Organizers:** While Reply #2 suggested the Starling's, those soft walls eventually collapse under heavy sports gear. I'm a huge fan of the GreenMade 46 Quart InstaView Collapsible Storage Crate. These have a solid weight capacity and literally lock into each other so they won't slide. Plus, they fit perfectly in that narrow gap behind the 3rd row!!
2. **Custom DIY Liners:** Instead of the high-end brands mentioned before, check out the Rubber-Cal Wide Rib 1/8-inch Thick Rubber Flooring Runner. It's basically the same material used in commercial garages. You can cut it to the exact dimensions of the Tahoe trunk floor. The friction is sooo much higher than plastic liners, so groceries won't budge even if ur taking sharp turns.
3. **The Netting Issue:** For the 'black hole' effect, I actually suggest the PowerTye 15in x 15in Cargo Net with 6 Adjustable Hooks. It uses a 2-inch square mesh which is way tighter than the standard 4-inch ones. It keeps small items like baseballs from slipping through. Basically, going industrial saves you like 50% on cost and the gear is usually tougher anyway. I mean, why spend more if you dont have to?? Anyway, hope that helps with the road trip planning!! peace

Seconding the recommendation above. unfortunately, cheap nets snap: - loose gear becomes missiles
- i had a bag fly forward once, *so* scary!! honestly, just dont skimp on safety.

Works great for me