Just thought I'd post a little summary and a few pictures from fitting trim tabs to La Frette. Hopefully it may be of use to others wondering how hard it is to do.
A quick spin on Gotchiguy's 'Into the Red' last year convinced me that I'd benefit from raising the stern slightly when cutting through the chop. (If you read between the lines I'm conceding that the egg whisk is a bit lardy - but don't tell Gotchi
). I'd also read Chris' posts about fitting tabs to Time Bandit which were also positive so took the plunge and bought a set.
Although Bennett hydraulic tabs are the most recognised brand I really didn't want the complexity, nor did I have the space for mounting the pump unit. This narrowed it down to Lenco or Lectrotabs. Not much to choose between them, and although the Lenco's have nice waterproof cabling connectors, I opted for the Lectrotabs because the control switch looked better and ASAP supplies had all the parts in stock.
Fitting was quite simple.
photo 1 shows the marked out locations.
photo 2 shows the antifoul scraped back to the gelcoat so the Sika will stick
photo 3 shows the holes pre-drilled. I countersuk a recess to allow a bit of space for the Sika to provide a good waterproof bead.
photo 4 shows the tabs fitted
photo 5 shows them antifouled and wires routed through the transom into the transom boxes. (Glad I specced underdeck conduits on both sides)