You wrote:
>      As a newbie to this sport I have numerous questions about the 
>      different tack and equipment used. I've looked at Biothane 
>      halter/bridles and have had experience with nylon bridles but was 
>      wondering if there are other alternatives. I seem to recall an ad for 
>      bridles made of another nylon coated material that claimed to be 
>      softer or more flexible than Biothane. Does anyone on the list know of 
>      such a thing and if so what would be a source?
>      
There IS such a thing - it is called "Thriftfree" .  It is a black 
rubbery coating on nylon webbing.  You can get it in any color you 
want, as long as it is black!  (Henry Ford Special!)  There are 
limited styles - a halter bridle style w/ a buckle on bit (no quick 
snaps), a quick change training bridle (bit snaps on), and a 
traditional english style w/ caveson.  It is more flexible, and it 
has a bit more grip to it.  Plain Biothane reins will slide thru your 
hands when wet.  This is less of a problem w/ Thriftfree.  (If you DO 
get Biothane, be sure to get rubber grips or web & Biothane so you 
won't loose your reins.)  Maintenance for Biothane & Thriftfree is 
lower than with plain nylon  - just hose it off, just like the 
Biothane!  Nylon tends to break down sooner & stretch more than 
Biothane or Thriftfree.
I sell this (I'm Blue Wolf Equestrian Supplies), as do a few other 
endurance stores/catalogs.  I personally like the Biothane better, 
but the Thriftfree tends to be a bit cheaper than Biothane.  Let me 
know if you want sizing or ordering information on either the 
Biothane or the Thriftfree.
Linda Flemmer 
ABF Challenger ("Rocket") & Eternal Point ("Major")
Blue Wolf Ranch
Chesapeake, VA
   "In case of emergency - Fur side up, steel side down!"