Leaving a team of 6 pt men is what they are anyway.You won't all of a sudden think you deserve someone who rides as an 8 pointer.So it should be near enough like for like with a 6 pointer.With the likes of Doyle etc,if they are out you have a limited number that could fill his role,and not many of those top riders do many guest bookings nowadays.And who could fill his boots around Foxhall anyway.

I wouldn't make a double change for sure.You have a good point that we will have that little more to play with come May.It all depends on the length of time Cook is out for I suppose.

You can get more replacements but not of the level you need as the team is still a "strength in depth" one... If Doyle is out, you can bring in the Holder's, Kurtz, Bewley, or  Fricke, meaning your team is still strong... Bringing in one of a plethora of 6 pt men still leaves a team full of 6 pt men due to the *strength in depth" idea...  

Perhaps Birmingham fans will confirm but I believe this is the last season the club can run at the stadium anyway?

Kerr will be fine imo. Just needs time to settle in. Don't forgot if he didn't have bike issues in his first race, he would have scored his average.  Also would be good if he got a Prem place, then time on the bike would be similar to other HLs in this league. 

If there was a rider on a 7 point ave available to replace Cook, even temporarily, I'd go ahead & do it. But if not, I'd stick with guests or r/r. I wouldn't make a double change, can't see any top riders willing to come over. Edit: Lynn's total average will drop in May, they'd have 7.30 available to replace Cook.