I was using a Miles tracker that was associated with EverNote but its support was terminated a couple of years ago.I then looked into various replacements. 

In my deal, 2% of NOI goes to GPs before LPs get their cut. 

There are way too many newbie syndicators and co-GPs out there, that call themselves syndicators that have not had enough experience, regardless if they have the right team.

Did yellow letters provide you with some sort of lead tracker for your leads?  

I can send you a sample linkFREE - Also built my own mileage tracker in Google Sheets, easy mobile phone access through the app$$$$ - For a scalable property management model we chose AppFolio which pretty much does everythingEven though we are using some expensive high-falootin PM software, our go to is Google Drive sheets for mostly everything.

Use a GoPro as well with GPS to review time-lapse photos later.