I’m not on the tools anymore for work but our crews often use a small lead shot bag with a tag line and a launcher to pull a larger bull rope up and through a sufficiently high branch set for an easy straight pull assist, or a redirect through a 5:1 pulley assembly. You can do a manual slingshot toss between the legs forward (see YouTube), or use an elastic launcher to help if you’re doing lots of leaners. One of the guys at work that does roping a lot near electrical transmission lines even adapted his potato gun to do precision shot bag shots lol. It’s pretty cool. But you can get the basic kit at arborist suppliers online. Nothing is better than being in the bush.