Re: Springboards?
@Takara07JDo you mean the launch pads in Weirding Woods? First off, have you found there's a button close to each pad? You need to first activate the pad with a nearby switch then get back to the pad quickly before it turns off again.
Otherwise, off the top of my head (it's been a while since I did the chests & golden gnomes) I don't think they're designed to get you to particular items, just to get you closer to them or an area?? 🤔
Is there one particular item you're trying to get?
Your best best with most chests & gnomes is using the pads to get close, then a bit of parkour and / or a jump ability, such as Soldier's "rocket jump" or Super Brainz "hyper jump thump".