Oh yes, I almost forgot.
When you have 8 stickies protecting a point, and you need to sticky jump somewhere relatively low, OR, when you need to climb up a small ledge and you dont want to take much damage, get familiar with pipe bomb jumps.
Practice by figuring out how long it takes for a pipe bomb to explode (about 2 seconds after the sound of it shooting is over), then run on top of it and crouch jump.
This does wonders.