1. We currently have 14 which includes 1 that is for sale, so that would be the number.
2. Whichever racenight that suits that particular team best.
3. In the last 20 or so years only Belle Vue have stayed as a top flight club, all the remainder have spent time outside the top flight.
I hate to see any team close for whatever reason, Coventry and Wolves both closed through no Stadia not through lack of support, so the more teams the better for the sport as a whole.
As for racenights Poole have shown racing on a night that people prefer to attend can be the best solution for increased attendances, we are trying to save Speedway in the Uk and what Poland does should not dictate what is best for the Uk.
Standard of competition ? obviously the level would be reduced due to the lack of riders, but that should not detract from the racing entertainment provided, currently we could have Brady Kurtz racing against Sam Hagon (nothing against Sam) but with the reduced standard that difference should in theory be less.
For goodness sake stop trying to hold on to something that has run it's course, in the early 1960's the top flight was down to about 5 teams, and the Provincial League had probably double that, the 2 Leagues amalgamated to form the British League (weaker standard but better) that is what needs to happen now, it does not need to be 7 man teams due to rider shortage, obviously not everyone will be happy least of all the riders, but this is a move that has to be made for the good of the Sport long term, the Sport has to put itself first and individual teams have to fit in with that.
I have tried to answer your 3 questions as best that I can, their will be issues of course and it's not one answer that fit's every Team but by working together British Speedway can dig itself out of the hole that it finds itself in, and while we are at it why can we not find a Sponsor and Tv company that can support a British GP series with a round to be held at every Track ?, the Sponsor to provide prize money at every round and the TV company to pay for the rights at each track, or something along those lines.