I'll summarize private boater info for those who dont want to RTFA:
Noncommercial trip sizes would remain at the current level of 16 people (standard), and a new group size of 8 (small) would be offered to reduce campsite competition along the river.
The maximum noncommercial oar trip length would be reduced to 16 days in the summer (from 18 ), 18 days September 1-15 (from 21), 21 days in the remainder of the shoulder seasons (from 21), and 25 days in winter (from 30 days currently).
March to October Noncommercial use would not be capped, increasing to 79,399 user-days (from an average of 51,889).
Winter use would increase to accommodate approximately 1,855 people per year. (from 31
Recreational passengers, whether commercial or noncommercial, will be limited to one river trip per year from Lees Ferry to Diamond Creek.
Visitation at the mouth of Tapeats and Kanab Creeks will be restricted to day-use only.
To protect humpback chub, visitation at the southern half of the Little Colorado River will be restricted seasonally (March 1 to November 30).
so count me in for a winter trip if anyone is going... seriously.