Possible Clues:

• Sprung gymnastic equipment
• Trap oilmen (anag.)
• Work up in track apparatus used by gymnasts
• River in public transport route can be jumped over!
• Vagrant's old job being a bouncer
• It makes for resilience to set up market on River Nile, perhaps
• The performer's bound to be uplifted by it
• Walk round -- policy that could give one bodily exercise
• Gymnastic equipment sees work flipping between rails
• Springy backyard apparatus