Martina is on the right track IMO.
First tracking was by Morais and Laçao and 2 dogs early hours 4th
Morais says they used clothing, but Laçao says having requested clothing or other item used by child, a blanket was provided.
IMO it's clear both officers were using one single scent item, and it was the comfort blanket, not clothing. This is further confirmed by KM book.
Laçao states the track led around G5 then past tapas reception.
No crossing the road.
Next tracking was by Fernandes and Silva with 2 dogs late evening 4th
They used a towel.
Track led around G5 then over road and right then to lamppost at carpark.
Next tracking was Fernandes and Silva again, using towel again, predictably giving same track to lamppost at carpark.
SO we have two different tracks.
1. The earliest, using the comfort blanket, goes round G5 and past tapas reception.
2. The later one, using a towel, goes round G5, over road, right, to lamppost at carpark.
(Sources:
http://www.mccannfiles.com/id258.html)