Follow this thread to know all about tanking-
http://forum.topeleven.com/tutorials...e-tanking.html
Now, for bidding tactics,
See which player u r buying. Don't buy players during the first 7 days OE season as all managers are busy spending tokens theybought. Then find a off time on your served, a time when not many r bidding.log in then.
At that time, look for the players u need, look for 4* players first as they will suit or low token budget. Then see their age, don't go for too young players as everyone wants to buy them and u I'll end up wasting tokens. They r also very expensive. Don't go for too old ones as well as they train too slow to handle. Go for ones b/w 24-28 years. Also, don't go for special abilities as they attract token buyerts and don't go for ones having ratings ending with 4 or 9. They attract token buyers as well.
Having said this,
See if someone else has bid for the player. If no one, then wait. If yes, see if those who have bid have scout players, premium logos, well upgraded stadium for their level. See what level the r. If the have a 5* team being one level abovu, it might seem as 6* them so u need to care for that. If the other has all these, it means he is a token buyer and so back off at once. If the other bidder is avg, u may try risking it. Bid in last 5 secs in the initial round and then see if someone has bid after u. If no, then wait. If u no token left after bidding in the first round, hope for the best. If no one bids,u will win. Else if the other guy bids, u need to bid to get intro the next K.O round. If or oppont has not bid, still bid in the last 3-4 secs. Ifhebids, u will go into the next doing, else will win it. ner spend more than ontoken in the same round and avoid bidding wars.