The 3-3-5 defense has made a big resurgance in high school ball. The whole premise is based on being able to blitz from anywhere on the field. Some people will align the same defense as a 3-5-3, with the SS's walked up to LB depth. It is easy to overload and stunt with this defense. It also can be suprisingly effective vs. the run if the DT's and ILB's play downhill and maintian thier gap assignment.
A couple of good ways to attack the defense:
1) Use big line splits. This moves the DT's away from the point of attack and puts a lot of pressure on the LB's.
2) The inside zone, and to a lesser extent, the outside zone are solid.
3) Inside Veer
4) 3 Step passing game with the slots reading the LB's hot. Devastating if the QB will get rid of the ball quickly.
5) Bubble Screen
If you have any more specific questions about it shoot me an email: radar995@hotmail.com