alright a few questions.
-square or round rail?
http://www.amazon.com/exec/obidos/tg/detail/-/B000068NL0/ref=pd_rvi_gw_2/103-6309095-7673436?%5Fencoding=UTF8&v=glance
will that rail work if i get 2 of them so its 14 feet. and is it even worth it to buy a rail?