Some nice antenna analyzer such as the MFJ or the Autek is a major plus for setting up such atypical antennas in tight spaces. In Urban Honolulu the RF background is enormous. I have found that a standard Low Pass Filter is virtually required. It is surprising how it improves the front end performance of many HF rigs by blocking out the several volts of TV, FM, beeper and cell phone RF that the area swims in. From my lanai I can see the tops of Waikiki hotels which sport 100 Kw plus transmitting antennas for local TV and FM stations.
Commercial stations seem to have some special exemption from RF exposure rules.
Just because something loads or even shows a good SWR does not mean it is going to work. It has to radiate. The energy can be lost easily in the tuner. I have found it worth while to try to resonate the antennas at the antenna itself as much as possible. Leave the tuner to do resistive to resistive impedance transformations as much as possible.