The ways that TPSD used to get to the Sacred Grove without the Golden Cucco no longer work, but by using a set of somewhat precise LJAs and good timing, it is possible to skip using the Golden Cucco to get into the Sacred Grove. Saves about 18 seconds over getting the Golden Cucco.
With a precise bomb-boosted moon boots jump strike followed by several backslices, it is possible to skip half of grove 2. To perform this skip:
The videos below are with early and late bomb timings, respectively.
The images below show what a first and second frame jump strike looks like, respectively (the frame where you would force unequip the iron boots).
With a first frame moon boots jump strike, it is possible to get up to the Temple of Time entrance without the block. Just stand in the corner, perform a first frame moon boots jump strike, do a jump attack, and roll over the rest of the stairs. Once you are at the top, you can open the door from the wrong side by pressing A while target walking backwards and away from the door.
It is possible to skip the spinner tracks with an LJA. Just stand around the middle of the ledge and target around the middle of the wall above the overhang.
By targeting the ground and then the wall near the Temple of Time entrance, you can get the ceiling bug without going down to ground level.