Originally Posted by RadSwim
For core strengthing in the pool, I really like dolphin kicks with fins.
Hope this helps,
This quoted and the others are all great suggestions. I'll study these and work on them when next in the water. I think the dolphin kicks should really help. I've only played with these but can see the value. They work the abs quite well.
Shinji's pre-Christmas suggestion for the use of the pull buoy has really helped me get better positioned and I think your points will help a great deal as well.