Any type sinking line - intermediate through fast-sink would not lend themselves towards nymph fishing with an indicator. For indicator nymph fishing one usually uses a floating line and attaches the strike indicator to the leader according to the depth and speed of the water being fished. A traditional rule-of-thumb has been to attach the indicator up the leader from the fly about 2 1/2 times the depth of the water if fishing a fairly fast flowing river or stream. So, if fishing a run that is about 3-feet deep, the indicator would be about 7 to 8 feet above the fly. I for one don't adhere to this tradition as I usually will attach the indicator about 1 to 1 1/2 times the water depth depending on the speed of flow. I fish my favorite spring creek with a subtle indicator fly (Parasol Emerger) and drop my first fly exactly to the depth that the fish are holding due to the slow flow. For faster water I usually will not exceed 1 1/2 times the depth of the water being fished. Also, I use a newer type indicator called a 'Thingamabobber' as it floats like a cork and is very easy to see and attach to and adjust on your leader.
Intermediate and other sinking lines do lend themselves to tight-line nymphing as well as swinging wets and streamers, but I think most tight-line nymph fihermen use a floating line as well.
Anyway, just my thoughts on how I do it.
Kelly.
Tight Lines,
Kelly.
"There will be days when the fishing is better than one's most optimistic forecast, others when it is far worse. Either is a gain over just staying home."
Roderick Haig-Brown, "Fisherman's Spring"