This significant increase in value is necessary to minimize the money trapped in the RE.The return is a function of invested amount, cash flow and appreciation, time.  

So at this point, I either sell at a one-time, bigger loss,  or keep renting it out and take smaller losses every month until the market recovers. 

-What creative strategies, syndicates, or JV arrangements worked best for minimizing personal cash invested?

For most people you will only save a little money on any PROFITS if you have a loss the first year.

As with all the other investors with CALM INVESTMENTS was never compensated for any of my losses, which was every penny put in his Company.

As a partner, I felt badly about the financial losses suffered by our investors.

Horror Stories:https://www.biggerpockets.com/forums/48/topics/1137397-baltimore-a-path-to-never-ending-painhttps://www.biggerpockets.com/forums/432/topics/1231840-sell-at-a-loss-or-rent-at-a-losshttps://www.biggerpockets.com/forums/311/topics/840134-memphis-turnkey-tenant-turnover-costshttps://www.biggerpockets.com/forums/963/topics/1195280-experience-of-oos-investing-in-cleveland-after-15-years

Next question, if you use these write offs to minimize your taxable income, can this hinder your ability to purchase other properties due to showing no income on your taxes? 

Quote from @Moe Sidd: @Niko Rossley, sorry for the loss.

Properly insulating your investment assets from your personal assets through legal entities should negate this concern (not to mention controlling loss record from spilling into other assets you manage).