fruit tree mounds

I have a heavy wet clay soil in my orchard that causes the water to rise (Capillary Rise).  I followed the advice from Dr. Redhawk about putting gravel in the holes to cover the water and planting on top of that.  This results in many little mounds.  Are these mounds big enough and will the fruit trees adapt to the mounds?  Should I bring in more dirt?

Judging from the pictures and my experience with my clay soil, bringing the mulch back around the mound is important.  I noted the cracking of the clay that was exposed.  Though my clay is white and not red or yellow when it is exposed and starts to crack the moisture no longer transports through it and takes a lot of flooding to get it hydrated again.  The deeper the surface litter the better trees grow.  Having ponds or swales near by to hold water during the winter seems to build up  water reservoir in the clay for our dry summer.

Yeah I will add some compost and woodchips on them.  Do you think the mounds (about 1 foot tall) will be okay?  

I had high water table issues at the Crescent City Food Forest, as most fruit trees need to have their crown 2-4ft above the water line. We built 3-7ft tall hugel beds, which had to have positive flow around them to ensure they did not become floating dam walls. We get 100”/winter there, and have 14acres of hardscape running off onto the 1.25acre site, so we also dug a diversion ditch to a wetland we restored (the site was once a creek and wetland).

I have a slightly different situation.  It is dense clay that trees are very happy to grow in from seed.  But in order to plant a tree I need to break into the clay which causes the water to rise up in the hole.