Can I place a Wilton half ball cake on an 8inch 2-layer cake without support? Or do I need to place the dowel rods, etc as with a tier cake?

I'm a newb to cake decorating--Thanks in advance!

IMO, I would. Put it on it's own board and some dowels. I am sure there will be folks who wouldn't though!

I did my ladybug cake & I put 4 dowels on a 10" & 1 long one in the center going through the ladybug & the 10".It traveled for 30 miles w/o a problem.

If it were me, it would depend on how far it was going to be transported. I like to dowel anything if I transport by myself because I live on a gravel road with lots of bumps/potholes/wash boards etc. If I have someone to drive while I hold the cake, then I wouldn't in this case, but if you want to be sure . . . dowel! (the ease of mind option is always the less stressful option to take when dealing with one of your 'creations')

I think I was most concerned with it being structurally sound. I didn't want the half ball to collapse into the larger round cake. Thanks again!

I would definitely place it on its own cake board and use the dowels