I'm not a big fan of radar detectors. I've been on the operator side of the radar gun and have seen how easily a radar detector can be beat. The detector can't detect that which is not turned on yet. Back when I worked traffic I pulled over plenty of cars with radar detectors mounted in the windshield and of course those were the ones that ALWAYS got a ticket regardless of the excuse.
Just my two cents for what it's worth.
Willing to bet the majority of those you nailed were the cheepy cobra and junk detectors out there. You get what you pay for when it comes to stuff like this.
Of course the detector is only going to work when radar/laser is at work. In the case of instant on, if your the only one on the road then yes it's only letting you know your caught. No new news there. Riders I know that used V1's and other detectors said such a full on alarm ment it's time to leave in a bunch of different directions NOW (none of them got caught either)
. However I'm not into police chases anymore at all. I'd rather do what I enjoy without the police even knowing or having a chance to engage me which can be done without riding like "Ghost Rider" without a on-board camera. Knowing your area well, doing certain things at certain times, and just plain common sense do wonders.
For the record I got my Valentine 1 last season and honestly, I lost count of how many times it saved me after 20 and that was within the first 2 weeks. However I didn't just get it to instantly warn me it's time to slow down because there's cops gunning people ahead. Like you said, such thinking will be useless against instant on or if the officer is even using the unit. Other reason I got it was to
Scout for police and where they like to hide on some of my favorite routes. Laser or instant on does bounce off other vehicles. I'll cruise at speed or ahead/behind (never in or alongside) the flow of traffic and will pick of traces of instant on or laser if it's being used. I also do pick up traces of a powered up unit of a patrol car parked in a parking lot out of site. They can't get any readings from the side like that (only direct front or from behind) but they usually will Guestimate a vehicle's ticket worthy speed if you look to be going too fast. Thanks to the V1, they see i'm doing the speed limit by the time I go by.
It's helped me weed out plenty of hiding spots police love to use be it on highways, country roads or the city. They love being by stores with automatic door openers that read x or k band. Mostly at intersections with the officer up the road aways. Just about any detector won't be of much use if they're using X or k band since it will show full strength x or k band when going by a rite aid or wal-greens (unless you have those bands turned off and now your really just as bad off). I have gotten Ka band hits in such areas as well and caught site of the officer just a little ways down. Also have seen cops who are a ways ahead of the intersection with another cop down the road ready to intercept as soon as vehicle description is given. While my detector has saved me plenty of times in "sudden" up the road signal reads or hits from behind, It has greatly helped me scout out and memorize speed trap areas which are becoming more common with gas prices effecting patrols in my area.