Several HAMs are using loop antennas nearly daily (especially Greg N4KGL with AlexLoop) and having great success with them.
See his and other posts on the RaDAR group (Rapid Deployment Amateur Radio):
I myself just got an Alpha Loop and getting the hang of tuning a loop antenna. First QSO was from Arkansas to England (UK) with 10W SSB. Not bad I¡¯d say :)
If you are interested, join in on the fun and operate your loop /P or /PM, post to the group and maybe even participate in the upcoming contest??if you like a challenge.
vy 73 de Marcus NX5MK
Apparare Scientior Paratus Communicare
