It wasn't until this latest incarnation of the ice games have I actually played them, so I feel a bit behind the curve. But after much practice, and watching some excellent YouTube videos, I feel that I have purple coin collecting down.
My suggestion: +30 jump spell or icy potion of jump, plus haste spell or icy potion of haste, and just totally skip the harbormaster house ramp. Oh, and no feather fall.
Need those potions? Then get coins to trade in for them the easy way (alternate method)
Once you got your spells on, try this!