Truck Covers USA Drain Hole

I've seen several post on the forums of people utilizing the Truck Covers USA American Roll tonneau and yakima rail attachments, but I'm curious if anyone has installed it without the drain hole. I'm wanting to purchase and install it on my 2017 Tacoma TRD Sport, but I really can't get over the idea of drilling into my brand new truck.

Has anyone installed it without the drain hole?
If so, does it leak at all or do you have issues with water in the bed?

I just don't think I can bring myself to take a drill to something so beautiful. I really want/need a tonneau cover with a bike rack option though.

 

The drain holes are already in the bed, you just have to drill them out bigger.