I haven't broke out my throwline in ages.
Dang, that is one of my favorite and cheapest tools; but i enter SRT/ no spikes.
Also though; i set myself up for travel horizontally, sometimes by setting a rig line in a giant upside down U. This spreads out the loading, gives 2 areas to lower stuff from (off each side of the roof etc.) and i can (myself or)have ground control hold 1 end as i tie off on another (while still tied to lifeline) swing or lower my heavy carcass to another zone (or anyplace in between). i can also speedline (or as i say use line as gravity bender; funny, new guy won't go and get a gravity bender the day after being sent for the blue sky hook) to a section on a either leg of U (or the horizontal / cross bar if 1 end is higher) to go further than the U too.
Other stuff too; other lines etc.; by using throwline as first chess move in game. i like playing it as a thinking game and no spikez; sometimes this s-lows me down; especially when i first started with it and was on the steep end of the L-earning curve. But, many times anymore; it saves time as my st-age is over the hill!
i also preset main rigs; like look at taking a large piece out with 2 lines; so i pre rig the far end of a horizontal; and install a line on a support over cutting end. Then, just go up and butt tie and cut etc.
On palms to be removed (or pines with blowed out tops etc.) i throw over top or top weak twig; place a running bowline around tree and pull up with the end of the throwline. Now, this will close around trunk too early; so i place control/pull leg of throwline threw/under/inside running bowline. Now as running bowline trys to close (or does) i back up and keep running bowline forced open until it is as high as strength of stem can take the pulling over force. This high leverage advantage point gives thicker hinge and better steering; for more confidance; even sometimes bring palm down across driveway; very slowly on a very thick hinge (into wide open face, no dutch). You can pull line up as high as ya want; with the smallest stob or baby branch high(as long as it doesn't break). A real, real time saver; when the other option is to climb and set line or piece out; especially if doing several palms at one location; especially if high, loose bark/palm boots. If pine with blowed out top; and has a low branch or 2, throwline over the lower branch(es) draped; and as long as there is a baby branch or anything (even in another tree over pine) do same trick.
i have at least 2 throwlines at a job. Another thing inventednessisms do is sell more jobs if they look real slick!