Like a Tightrope Walk, but With Looser Tension
Puzzle 8 of Same Letter at Both Ends Easy Pack
Question is: Like a Tightrope Walk, but With Looser Tension
and the answer is: SLACKLINE
Word Meaning:
SLACKLINE — (forestry, mining, sports) A length of cable, rope, or webbing that hangs loosely from its points of suspension.
Definitions from Wiktionary.