Anyone use a Deferred Sales Trust?

[Sam Rogers]

Deferred Sales Trusts seem like a viable strategy to defer capital gains. But really the only info out there on them is marketing material (I'm talking to you Brett!). I've talked to a few tax accountants and attorneys about it and some are open-minded, while others are convinced that they are a complete sham (though they actually know very little about them).

I'm curious if anyone on here has actually seriously considered using one or actually used one?