Estou tentando conseguir MVCMiniProfiler trabalhar com PetaPoco

Estou tentando definir a conexão na criação do banco de dados PetaPoco, mas tive problemas (connectionClosed)

public class DbHelper
{
    static Database _CurrentDb = null;
    public static Database CurrentDb()
    {
        if (_CurrentDb == null)
        {
            string connstr = ConfigurationManager.ConnectionStrings["MainConnectionString"].ConnectionString;
            var conn = ProfiledDbConnection.Get(new SqlConnection(connstr));
            _CurrentDb = new PetaPoco.Database(conn);
        }
        return _CurrentDb;
    }

}

Eu li este itemhttps: //github.com/toptensoftware/PetaPoco/issues/4 mas pode fazê-lo funcionar

Qual é a maneira correta de fazer isso?

Edita

A solução foi fornecida por Gareth Elms:

public class DbHelper
{
    static Database _CurrentDb = null;
    public static Database CurrentDb()
    {
        if (_CurrentDb == null)
        {
            _CurrentDb = new DatabaseWithMVCMiniProfiler("MainConnectionString");
        }
        return _CurrentDb;
    }

}
public class DatabaseWithMVCMiniProfiler : PetaPoco.Database
{
    public DatabaseWithMVCMiniProfiler(IDbConnection connection) : base(connection) { }
    public DatabaseWithMVCMiniProfiler(string connectionStringName) : base(connectionStringName) { }
    public DatabaseWithMVCMiniProfiler(string connectionString, string providerName) : base(connectionString, providerName) { }
    public DatabaseWithMVCMiniProfiler(string connectionString, DbProviderFactory dbProviderFactory) : base(connectionString, dbProviderFactory) { }

    public override IDbConnection OnConnectionOpened( IDbConnection connection)
    {
        // wrap the connection with a profiling connection that tracks timings 
        return MvcMiniProfiler.Data.ProfiledDbConnection.Get( connection as DbConnection, MiniProfiler.Current);
    }
}