Good place to drill drain line holes on a backflip G2?

First of all, anyone out there put a backflip G2 on their 2021 Tacoma?

I haven’t added the 7/8” drain holes because I don’t know what’s under the bed and I’m a little bit afraid to start drilling a hole. On the left side is the tire well and I know I’m also close to the gas tank fill line.

We’ve had nothing but rain for the past two days, so I’m not able to get under the truck and take a look. I’m also not sure if I can see up under the wheel wells and map out where I need to drill.

Any suggestions?

 

Your truck already has (2) 1/4" drain holes in the front left and front right of the bed. You could drill them bigger I guess.