(11th Cir. 1987); United States Martir, 782 F.2d 1141, 1145 (2d Cir. 1986)E/rata/States' Winsor, 785 F.2d 755, 756 (9th Cir. 1986); United States Acevedo-Ramos, 755 F.2d 203, 206-07 (1st Cir. 1985). The rationale for permitting detention hearings to proceed by way of proffer is that such hearings are "neit