Lock your rate in for all five years when you take out your loan.

I sold due to emotional triggers.  

I have locked up one deal off the application and have offered in person on 2-3 other deals.

Luckily most of them are locked in fixed rate loans which gives both the syndicator and investor more leeway and time. 

Specifically, they use a service like Plastiq; you can pay Plastiq a flat 3% fee (roughly) to make a wire transfer without triggering a cash advancement with the credit card company.

I’d recommend going with a broker as they usually have better interest rates, and paying attention to rates (mortgagenewdaily.com) to see if they’ve fallen since you locked your rate and you could potentially float down to a better interest rate

Lock up that property you want and then you can always refinance later when rates drop.

This locks in your monthly expenses, versus  HELOC that is variable, and matches well to the long term hold of the rental.I use HELOCs for shorter term capital needs, i.e. flips, or even possibly the acquisition and renovation of a rental, but always with the belief that I will have it paid off in under a year, typically 6 months.  

My company signs long term leases with investors to lock in great returns with them.

I can wait...Not needed, continue being nasty and objectionable as you wish, ;-)  Continue being triggerred.