You are not supposed to fly close to the ground without seeing it Except when necessary for take-off or landing, or except when specifically authorised by the competent authority,(SERA 5015)
I assume that a published procedure is such and authority, but yes it's tricky to level off and fly without an autopilot, at 500ft AGL, while fidgeting with the FMS to activate the go around procedure, and without the ground in sight. At each sim session I practice it again and again, with an unnoticed engine failure while descending it's even better.