OK, there is a BIG difference between a 15 minute (sidewalk) show and a 30 minute (circle) show. You better be DAM good for either one. You draw an edge with a simple effect like silk in Thumb tip. When you have an edge (about 5 or more specs) you go into your next effect. Then you hit them with the finale. That is the BIG KAHUNA of your show. Gazzo starts with the silk like I mentioned, then does a card trick, then the Cups & Balls is his finale. He will run up to 45 minutes with these 3 effects. You don't want any more than 3 maybe 4 effects. Remember the whole purpose of your is to ENTERTAIN the specs not to baffle them with your "powers."
My filler is a rope routine then into either the 3 ring (Capehart) or 4 ring (Haydn) routines. I have MY OWN patter that I use. Do NOT try to copy verbatim anyone else's patter, you will fail if the patter is not your own.
Paddy have you ever been heckled from the hanky vanish?