Possible Clues:

• Glamping option named for its shape
• Spooner's national hero inclined to provide holiday accommodation
• Conical campsite feature
• 'Pitched around with a ring, by the sound of it (4,4)'
• Put wager on, fifty-fifty — net return covered quarter
• Campanologist's temporary accommodation?
• It is held up by a central pole
• Ring what you pitch?
• It's round with a ring for shelter (4, 4)
• That might get pitched with a ring