hi, sorry if this is too"rookie" a question here. I would like to know if I can install a bulkhead behind my seat? I assume so, but don't know how to go about it. if you can help please be specific about all materials and procedures and suppliers, as I know very little. and, can i install a better hatch in my pungo?it is a great kayak for fishing, I just want to add a bit more safety and conveinience. thanks, Tom