So, I am having a TON of trouble making the 2 speed jumps in the Shipwreck platforming section. Anyone have any advice for being able to get consistent at making the long jump over the gap and the jump over to the bear platform?

This is the jump I spent 2 hours trying to get earlier today (only got it this one time) and am trying to get consistent.

Nice Jump! But really, 'R Pumping' is the best strategy to use here. It increases your top running speed dramatically and can even increase your horizontal speed mid-jump. Just mash R, simple as that.