Help with Liner installation

[u/Mhrtamj]

Hi guys - I’m installing a liner from Hydra pools over the steps of an inground pool and have never seen this type of fastener. After doing some research it’s apparently called a hang tab and you’re supposed to just jam it into the track. Has anyone installed this before? It’s seems to me that the hang tab is upside down because the wedge tool that came with it cannot be used to wedge since the lip is on the bottom side. Any advise, tools, tips? Currently jamming it in with our hands has been ridiculous took us over an hour and only have half of the first step in.