Chris,
Have you tried a hera rod for catching bigger fish using tenkara style techniques? I have a inexpensive one I bought from allfishingbuy.com that would seem to fill the bill. Although it won't cast a fly using just tenkara line all I have to do to get it to work is add a strike indicator and I'm in business. Allfishingbuy has some Daiwa hera and koi rods that look interesting.