If a rental/lease contract is a legally binding document...enforced by collecting rent...or enforced by an eviction process if rent is not paid....then can there not be a document (legally binding) for a tenant to sign that would relinquish their rights as a squatter or due process of eviction...

There is really no risk of you losing your investment as long as it is insured and you do your job as a landlord … fill the property, collect rent, maintain it.  

Our partner lives in North Dakota, the STR is likely to be in Florida (I plan to shop after BPCon 2023) but we are planning for the LLC to be in CA due to their fee collection. 

Some will collect first, last, and a deposit equal to a month of rent.

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

You'll add more value for a co-GP situation if you can raise and organize capital by leveraging the collective GP's track record as an apprentice.  

But, if you want to be nice, give them a warning after the first one then start the process the next time it occurs.  6 times in a row means it's probably time.However, if they pay every month and you are collecting your late fee as well... 

Landlord’s only option to collect funds for damages is to take tenants to court.More and more tenants are only having a portion of their rent covered by S8, so landlords need to still screen S8 applicants for portion they must pay.Landlord cannot charge S8 tenants a portion of shared utilities – which can lead to the infamous tales of tenant retaliation against landlord by blasting heat on high with open windows during winter.S8 caseworker response times can be very slow, as they are usually overworked & underpaid.Again, overall it’s a pretty good deal for a landlord that does some decent screening.Exposing Section 8 Housing | Tenants From hell 243 - YouTubeLiberals Blame this Eviction on Landlord Despite the Before & After Footage | Tenants From Hell 241 - YouTubeMy first Baltimore buy & hold investment - SOLD (Lessons learned) (biggerpockets.com)Besides MANY self-labeled "gurus" exaggerating their success, many of them just supply readily available info.If you're too busy to find the info and are willing to pay for it, no problem as you accept their time vs money solution.REGARDING S8 GURU ISSUES SPECIFICALLYMost of them don't share all the facts about how Section 8 actually works.They claim you can get HIGHER rent from S8 tenants vs private-paying tenants.Why would the government allow our tax dollars to be spent this way?

For no/low-cost seller leads, I'd also recommend FSBO via zillow or realtor.com.As far as commission structure, the post-NAR settlement rule is that you are only allowed to collect the amount negotiated on your buyer agreement.

After this tenant leaves, you must clean/repair, market, screen applicants, select an applicant, collect the deposit and rent, get them moved in, etc.