Obmi

So I want to have fire extinguisher truck cap. But I'm not sure how to mount it to the shell. I want it in the back bu the lid. Something like this.



Also some fishing pole holders in the top. Its got some insulation on top. ( here is a pic before i attempt a repair)





I don't really want to drill all the way through the shell. Im sure I can fish a wire or slip a Zip tie through the roof for the pole holder. But I would like to see pics or ideas on how you have done it or would do it.