I'm self employed and can't verify income due to write offs

Hi. Can I get a HELOC for my two rental properties if I'm self employed and can't verify my income because of write offs. Both the properties are condos and I don't want to do cash out refinances because on one of the condos I have a 30 fixed with 4.75 percent and on the other condo I have an adjustable which is 3.125 percent until May 2021 which I want to keep because of the low interest rates that are expected for the foreseeable future. Would prefer HELOCs to have the money ready when the right deal comes along but don't know if anyone will do them for a self employed person's rental properties especially nowadays with the pandemic. Both the condos are in an A class neighborhood of Southern California. Want to tap their equity to buy affordable multi units in Southern California or neighboring states like Arizona. Every time I hear a bigger pockets podcast, I think it was easy for the guest to do it because they could verify their incomes with W2s but where do self employed people go for financing like HELOCs with all the impossible underwriting that's needed to get affordable financing.