Ideal length of cordellete

If you are going to use one, use a length that is some multiple of your wingspan minus a few inches to make racking the cordelette easier.

For leading blocks I generally have a short and a long one for bolted anchors vs gear an just to keeper options open for beefing up rap stations on way down .

If your are going to use one, consider the benefits of a single strand tied in a loop(thinner cord) and a single length with 8's on each end. (Thicker cord usually)

Learn to use rope also, more tools in the bag always better!

54 decimeters, give or take

According to this about 21 feet: basicrockclimbing.com/how-t…

The cordelette for sale at REI is that length: rei.com/product/716962/pmi-…

On a long multi pitch climb with gear anchors that I've never done before I usually bring 20ft of 7mm. A lot of times I'll use the rope to build an anchor and it stays on the harness but there is the occasional time where I'd rather just sling a big block/tree/whatever as an anchor or I really need every last bit of rope for a long pitch.

Also as mentioned if you end up having to leave some behind to rap off its good to have.

Really just no good reason not to bring one IMO.

On shorter climbs with bolted anchors or things I've done before and know I won't need it, yeah, leave it on the ground.

I use 21 feet of 7mm . That being said I use the rope to build anchors 75% of the time. I take two cordelletes when we are explore climbing. But most of the places near me to climb have bolted anchors and a double loop figure eight and two lockers and I am done. If I have to use gear cloves and a sling or two usually do the job.

No one said Yer gonna Die yet?

Mine is 20ft, but I mostly switched over to about that size in a 240cm sewn sling.

I think it should be as fat and as long as possible, otherwise you might not be able to please your partner.

18'-21' sounds about right. I mostly use the 8' dynemalette for anchors. It is much smaller and ties up quickly. If some of the pieces are far away you can incorporate extra slings. The 8' sewn runner will equalize 3 pieces in close proximity well enough. I like to carry one regular cordalette on big multi, even if the anchors are all bolted. It can aid immensely with self rescue if things go that way.