These of some of the personal things i work with:

Everyone to some degree incorporates their own starting point

Most generally - when spider rigging - movement speed can be from .3 - .8
Trolling speed - any speed can be used as long as you can get movement out of product you are
pulling: Wgt of jig - depth of jig - also becomes a factor.
Spider riggin - 1/2 oz wgt will help you get a depth needed & angle will depend on speed applied
and/or increasing wgt to main line to hold depth

There are formulas for long-ling depths and amount of wgt - to jig used.

Have seen people - wgt front lines as much as 2 1/2 oz to main depth / such as "down rigging" effect
Long-ling - have seen speed vary from .8 - 2.4 mph (hallin the mail)

Each and every lake will require time spent on - to get feel of lake and what fish want