IME, the optimal forward lean angle for a particular skier can be totally boot related.
All my boots prior to 2012 were whatever come out of the box with the exception of the Dachstein V5. Most of the boots were San Marco and Head. Switched to the Fischer Vac 130 Pro in 2012. Molded the boot at 14°. The boot skied well. Had couple more pairs of Fischer Vac after that one. All set up identical to the first pair. All skied well.
Few seasons back, switch to an Atomic WC 130 Pro. The boot came out of the box set up for 14°. Boot did not skied well. Started tinkering after 5 days on snow. Addition of a spoiler made the boot better (for me). That effectively increased the forward lean. I swap out the 14° forward lean wedge with a 18° wedge that was included in the box. The boot came alive for me. YMMV.
If the boot allows for forward lean experimentation. Go for it.
All my boots prior to 2012 were whatever come out of the box with the exception of the Dachstein V5. Most of the boots were San Marco and Head. Switched to the Fischer Vac 130 Pro in 2012. Molded the boot at 14°. The boot skied well. Had couple more pairs of Fischer Vac after that one. All set up identical to the first pair. All skied well.
Few seasons back, switch to an Atomic WC 130 Pro. The boot came out of the box set up for 14°. Boot did not skied well. Started tinkering after 5 days on snow. Addition of a spoiler made the boot better (for me). That effectively increased the forward lean. I swap out the 14° forward lean wedge with a 18° wedge that was included in the box. The boot came alive for me. YMMV.
If the boot allows for forward lean experimentation. Go for it.