some thoughts after loosing a T-8 and having one really trashed..so I added:

Abus Rockwell 60 Chain with Boron in the steel. Abus stainless lock. That goes thru handle of T-8 and to the welded on tow eyes on transom.

Chain #2 same stuff rockwell 60 w Boron but Master brand thru handle and then thru hole drilled in alu kicker bracket - this is some of the stuff they use to secure $30K harleys...

Mcgard lock on thru bolts

finally: welded the T-8 to the boat - hard to do with fiberglass but essential with the !@#$#@! nutcase thieves we have. The t-8 is heavy enuf in the XXL that I tow the boat in for service to the kicker anyway..

Bills' locksmith in Kent can get the above locks/chains in a day or so: about $150 a set, not cheap but essential and cheaper than deduct and the frustration..

sorry to hear about your loss..

JD