Jim, Russ mean Trojans not Trogans.

Trogan,Trogan
RB

Jim I asked someone about them once and got a negative reply. I can't remember the details though. I know that doesn't help you any especially if Varmint had good success with them. I think it may have been Wolsky. Maybe whoever it was will read this and respond. Just trying to get you any info before you invest your hard earned money.

All I can tell you is I installed three D31M blue top marine Optima's in my TR21 about 6 months ago.  I spend long hours using a three way rig that requires a lot of trolling mtr use. At the end of the day the power settings feel the same as when I started. They recharge much faster, are lighter and smaller. 
If you are going to keep the batteries a long time (in that boat or move them to a new boat) they are worth the extra money. I have a red top in my Jeep that is 8 years old and still going strong.
I was really tired of the hassle of topping off the battery water every month.  A TR21 with four batteries leaves very little room for access.
That's my 2 cents.

Has anyone  or know anybody that has used Optima batteries. Im putting a 36 volt system in and am wondering about the dry cell technology.I can get Trojan batteries though work but want to know more about these!