The Web Visualization Tool in R77.x only supports the Access Policy.
In R80.x, the equivalent tool supports all policies.
What I would do is:
1. migrate export your R77.30 Manager using R80.x migration tools
2. Install R80.x in a VM
3. migrate import the R77.30 configuration
4. Use Exporting Check Point configuration from Security Management Server into readable format using "Show...
This also is a nice way to assess your readiness to upgrade to R80.x, which you should consider doing soon since R77.30 is nearing End of Support.
For licenses for the above, you can get a 30 day eval.
How to Request an Evaluation License