There are a few pics of a BMK style bridle from a recent build here:https://picasaweb.google.com/101290896467405554640/SixthSenseBuild
The cow hitch is another popular way to attach the bridle to the spars. Easy to tie and remove.
It probably goes without saying but make sure your bridles legs are very accurate in lengths and symmetrical on both sides. A properly adjusted bridle can make or break an otherwise fine kite.
Most kites use Spectra cored bridle line or perhaps Spectra flying line for bridles. Make the bridle minimally as heavy as the heaviest line you might use to fly the kite. Some common bridle weights:
UL: 100-150# (maybe a little lighter)
SUL: 100# and lighter
BTW, I still have that Exile we traded a few years back. I converted it to a 2PT UL.