I've done many years of cheap Amazon hood lifts, ebay hood lifts and OEM hood lifts. I finally got sick of replacing the struts and purchased a a hood prop.
80 Series Land Cruiser Hood Prop Rod Kit -...
No issues DIY. Use a broom stick of some sort to support the hood while you change out one strut at a time. Same with the hatch. You can also use a ratchet strap to hold up the hatch and hood from the ceiling of your garage if you can.