heh you asked!
More over, your premise is wrong...
System is such -
you give money to a guy in india .. he deposits the money in an indian account of his brother who is an NRI .. so NRI can send money outside.. no problem ..
NRI opens broker account say in UK in NRI name and gives you details.. you trade, you make profit, you click WITHDRAW, it goes to NRI bank account in NRI name .. NRI sends money to his brother in India .. his brother charges whatever service charges are and sends rest of profit to YOUR indian account in Indian account .. so there is NO legality problem here ..
Coming to trust system .. well, to each his own .. why people would go for it .. because some of us feel we can make BIG profits in forex .. way more than what NSE BSE etc has to offer BUT, we are trying to find a LEGAL way to do it ... as I said, risk evaluation is to each his own and such systems exist since post independence ..
Above is the ONLY legal way to go about it ..