I know that when you want to restrict movement or scaling to a certain axis you hold down the keyboard key corrresponding to the axis that you want isolate but I have a problem I am handicapped and only can only use 1 hand to move the mouse.

Is there any other way to restrict which axis you want to operate on?

It would also help if when you select move or scale the direction arrows are displayed. It seems that the arrows become visable only occasionally. Is there any way to get them to show?