explaining rigging gear requires a discussion of techniques, rope selection and cutting technique as they all go together.. obviously beyond the scope of this thread.. so here are a few tips
First recommendation: use a port-a-wap, aka porty:
porty makes lowering much faster, and gives a lot more control as shown below....
demo here:
second is rope selection... PM me and I'll send you a link to some vid worth watching on 1/2" true blue, made by sampson.. real durable, good stretch, and easy to tie, hold knots well etc...
for blocks and slings etc I have used shackles tied to short sections of rope well before the rigging rings were brought to tree work by David Driver of Arbor X... the shackle is a poor man's ring and very useful for redirects, especially helpful for bucket work... one caution would be bend radius , so be careful not to use the shackle as the solo rigging point for anything heavy.. as soon as you use multiple overhead lowering points, as in put two shackles up, or use a hybrid system of natural crotch and shackles, blocks etc, you don't have the bend radius issue from a single shackle..
simple quick and easy use of shackle for redirect, satellite rigging point
the beginning of this video shows a hybrid system and some other tips worth watching
old school lowering a top
kind of like the crosby hook for quick tie on and off