There is innovative energy monitoring/submetering available that allows for electric use to be accurately metered among tenants without separate traditional meters/submeters, and it is an insignificant cost to implement & an accurate alternative to RUBS.

After stumbling upon the BP podcasts, we've decided to look for duplexes to implement a house hacking strategy by renting the second unit to a tenant.

The next issue is materials now you should only be buying materials not tools so there are a few ways to implement this.

Like most of you here I have thoroughly studied the bigger pockets podcasts and creative financing strategies and I am very interested in implementing the "BRRR" strategy.

I highly recommend @Scott Smith out of Austin.He understands LLC establishment and implementation extremely well.Happy to speak with you about my experience with him.

I am currently learning real estate, reading books, and getting the education needed to implement my desired strategy.

Does one reduce the current effective rent and then implement rubs? 

I would recommend implementing a scope of work into your process from the get go and I think everything will run smoother from that point. 

Yes, I am presenting waterbill only to new tenants and lease renewal tenants (notifying 2 months before) so far implemented RUBS for 10+ tenants.

Regardless, you need to implement insurance and proper management procedures, regardless of how many assets and equity you have.