Paul, VK6WZ told us about his adventures with a Flower Pot Antenna. He advised us that winding the coils at the bottom loosely affected the SWR. Experiment for yourself.
Here's a detailed design from VK2ZOI:
20140628 - Flower Pot Antennaposted Jun 27, 2014, 5:16 PM by Onno Benschop [ updated Jun 27, 2014, 6:40 PM ]