If you have good neighbors ( or live out in the sticks) hacking a hawk is really a fun endeavor... Having done 5 goshawks now along with a spar and a half attempted sharpie I can tell you as Paul has said they will come in leaps and bounds ahead of the hawk that has to weight until hard penning... Don't start to late, I think, as they will develop flight paths and preferences as to where they like to hang out and feel secure.
John I think of all the accips a bit of hackinbg will bebefit the coop the most. Not having to deal with pent up energy and some independence, may make the imprint coop a fun hawk to fly.( I've never gotten over the over the shoulder Dragon stare they give you). Be careful though while it takes a while for a gos to become a killer ... a coop and for me it was my sharpie, takes very little time to figure it out. Also with a sharpie they will quickly become independent if you aren't careful.
BTW I would skip the bell , and view it as a dinner bell to every predator in the 'hood, that's why you put the wire on them.02
Barry
"you believe you understand what I said, do realize what you heard is not what I meant"
Barry