You can place as many bets
as you like on a single spin of the wheel up to the table maximum.
Some casinos use a rule called en prison. When a zero or
double zero hits, the player loses half the bet, or can let the bet remain in play, with
the results to be determined on the next spin. This rule only applies to even money bets.
With the 38-number American wheel, the house has a big 5.26
percent edge. (Whenever 0 or 00 are hit, all bets lose.)
With the 37-number European wheel, the house advantage is
2.7 percent. In other words, on every $100 bet the house makes $2.70. With the en
prison rule, this edge drops to just 1.35 percent.
Obviously you want to look for casinos that offer the
European, single-zero wheel -- and many online casinos do. If you can find one that also
offers en prison, so much the better.