I think I have laid out a possible way to allow it without it being gamed.
A. Allow only Whales (over 100,000 SP) to "Gift" their SP
B. Require the "gifted SP" be 1/2 their total SP
C. Require the "gifted SP" to be equally distributed amongst 100 Minnows (could be randomly picked by the system or hand picked by the whale)
D. Require that no "gifted SP" goes to someone with 10k SP or higher. (Should prevent multiple whales Gifting the same minnows)
E. Make the "Gifted SP" part of the giftee's total SP: non-transferable or withdrawable (power down) EVER!
The none transfer of SP is a good start. But what about voting in your own content.. Catch 22