for the week ending 5/27 I did not do a vxx trade, didn't like the action, but I did mark a wed variation trade for reference with the 3 lot trade size it gained $78, enter wed am at 13.98, exit wed pm at 14.24.
for the week ending 6/3 I did a thu pm entry and fri am exit, the 3 lot trade gained $150, in 13.11, out 13.61.
VXX thu/fri trade is based on observation that VIX is likely to make a low on thu and then move higher on fri.
I have been trading this with good results. A variation I have found is to watch for an entry on wed.
i have been doing a 3 lot with VXX and for last five weeks results are gains of $150, $198, $375, $78 (trade marked, not taken), $150