Just installed the hubsan parachute to my p3a ,didn't need longer legs after all.
I installed the mars mini mount and used nuts and bolts to secure (had to take parachute apart)
I gave it a quick test flight in the garden and it has not affected the control of the aircraft .Its too windy here to
try a proper flight.
A bit of black tape to cover the bolts and it doesn't look too bad .Its never going to look totally professional without a purpose made mounting system but I'm quite pleased with the result and peace of mind it gives.
Update !
Wind lowered and took it for a 15 mins test flight ,armed parachute and tried all ways to get the phantom 80 degrees (when parachute deploys) but thankfully the parachute didn't self deploy. Feeling more confident now